A new study shows that rising levels of planet-warming gases may reduce important nutrients(营养物质)in food crops
Researchers studied the effects of carbon dioxide on rice. In the experiment， scientists grew 18 kinds of rice in fields in China and Japan.They set carbon dioxide levels to what scientists are predicting for our planet by the end of the century.Rice grown under high carbon dioxide conditions had，on average，13 to 30 percent lower levels of four B vitamins and 10 percent less protein(蛋白质)The crops also had 8 percent less iron and 5 percent less zinc than rice grown under normal conditions. However, vitamin E levels increased by about 13 percent on average.
The researchers said the effects of planet-warming gases would be most severe for the poorest citizens in some of the least developed countries.These people generally eat the most rice and have the least complex diets.That includes about 600 million people in Indonesia， Cambodia，Myanmar，Bangladesh，Laos and other nations，mainly in Southeast Asia.
Other studies have shown that higher temperatures from climate change and weather extremes will reduce food production.But scientists are finding that rising levels of carbon dioxide and other planet-warming gases threaten food quality.
Earlier studies showed that wheat，rice，field peas and soybeans grown under high carbon dioxide conditions all had lower levels of protein and minerals.Scientists predicted that almost 150 million people might be at risk of having too little protein or zinc in their diet by 2050.
The new study suggests a way to lower the nutritional harm of climate change.That is to grow different forms of rice that can adapt to higher carbon dioxide levels.
1.Growing rice under high carbon dioxide conditions may____.
A. increase iron in the rice B. make it more delicious
C. cause losses of Vitamin E D. make it less nutritious
2.How can people reduce the nutritional harm of climate change？
A. By importing rice from China and Japan.
B. By taking other kinds of food instead of rice.
C. By avoiding eating rice from Southeast Asia.
D. By growing rice suitable for the environment.
3.What’s the author’s purpose of writing the text？
A. To inform readers what nutrients food crops contain.
B. To call on people to care for the planet they live on.
C. To share the results of some studies on people’s diets.
D. To tell readers where food crops are mainly produced.
4.In which part of a magazine can you read the text？
A. Advertisements. B. Arts and culture.
C. Science report. D. Business news.
WeChat is a social mobile application with voice and text messaging timeline and several social features like ‘Message in a Bottle’. WeChat, a popular instant messaging tool run by Tencent Holdings, aims to help users access mobile services without downloading separate apps, which experts said may challenge the business of smartphone app distributors such Apple Store.
This new feature, named ‘Mini Programs’, allows WeChat users to find a variety of services such as ticket buying by scanning a QR (quick-response) code, saving them the trouble of installing a number of different apps on smart devices, according to the transcript of a speech by Zhang Xiaolong, Tencent’s senior executive vice president, on Wednesday. The new function is expected to come online on January 9.
Zhang, known as the father of WeChat, emphasized that ‘Min Programs’ is not a mobile app distributing function.
Still, experts and app developers said that the rollout (推出) of ‘Mini Programs’ on WeChat will erode the market share of app distributors like Apple Store in China.
“‘Mini Programs’ will attract lots of start-ups, because a program based on WeChat can help them build up businesses at much lower costs,” a Shanghai-based app developer, told the Global Times Wednesday.
If a start-up wants to promote its business via a separate application, it has to hire a special team to develop two different apps— one each for iOS and Android.
Lsiunched in 2011, WeChat has evolved to include services such as ‘Order Taxi’, ‘Food Delivery’, e-commerce and payments from just an instant messaging app.
1.What can we know about ‘Mini Programs’?
A. It’s expensive. B. It’s complex.
C. It’s convenient. D. It’s free.
2.Why do lots of start-ups choose the ‘Mini Programs’?
A. It can cut the costs of building business. B. It can help build up business.
C. It can help them make a big fortune. D. It can promote their business.
3.What does the underlined word “erode” probably mean in Paragraph 4?
A. reduce B. increase C. improve D. promote
4.What can be inferred from the last paragraph?
A. WeChat will be a perfect app. B. WeChat will meet a great challenge.
C. WeChat will meet needs of more people. D. WeChat will replace other apps.
San Francisco Fire Engine Tours
San Francisco Winery Tour
Running: February 1st through April 30th
This delicious tour goes through the city on its way to Treasure Island where we will stop at the famous Winery SF. Here you can enjoy 4 pours of some of the best wine San Francisco has to offer. (Included in tickets price)
Departing from the Cannery: Tell time upon request
Duration(时长):2 hours
Price: $90
Back to the Fifties Tour
Running: August 16th through August 31st
This tour transports you back in time to one of San Francisco’s most fantastic periods, the 1950s! Enjoy fun history as we take you through San Francisco for a free taste of ice cream.
Departing from the Cannery: 5:00pm and 7:00pm
Duration: 2 hours
Price: $90
Spooky Halloween Tour
Running: October 10th through October 31st
Join us for a ride through the historical Presidio district. Authentic fire gear (消防服)is provided for your warmth as our entertainers take you to some of the most thrilling parts of San Francisco.
Departing from the Cannery: 6:30pm and 8:30pm
Duration: 1 hour and 30 minutes
Price: Available upon request
Holiday Lights Tour
Running: December 6th through December 23rd
This attractive tour takes you to some of San Francisco’s most cheerful holiday scenes. Authentic fire gear is provided for your warmth as you get into the holiday spirit.
Departing from the Cannery: 7:00pm and 9:00pm
Duration: 1 hour and 30 minutes
Advance reservations required.
1.What can tourists do on Back to the Fifties Tours?
A. Go to Treasure Island. B. Have free ice cream.
C. Enjoy the holiday scenes. D. Visit the Presidio district.
2.Which of the tours is available in March?
A. San Francisco Winery Tour. B. Back to the Fifties Tour.
C. Spooky Halloween Tour. D. Holiday Lights Tour.
3.What are tourists required to do to go on Holiday Lights Tour?
A. Take some drinks. B. Make reservations ahead of time.
C. Wear warm clothes. D. Set off early in the morning.
Nine months ago，I was packing my daughter’s backpack with new school supplies，wondering how I was going to send her off to kindergarten.I stood on the playground，tears pouring down my face because I wasn’t ready for this first day of kindergarten——but she was ready.Today I will be standing on the playground， once again with tears，because this precious time went by too quickly.This week I realized that I never told you "thank you".I don’t know how to express a mother’s thanks in the way a teacher deserves.
We first met you at the open house the week before school started and I immediately knew you would be the type of teacher we would appreciate forever.While the students lined up for the day，you touched each one on the shoulder as you greeted them.If a student was having a tough I got to know you as I volunteered in the lunch room.You made sure your students were all ready for lunch before you went on your own lunch break.You kept track of their big things and small things，because as a veteran kindergarten teacher，you know that the small things are the big things.I loved the way you made each student feel special.You helped them fall in love with school which is so important at the start.
To all of the teachers in the world who are like you.I wish you knew how grateful parents are for you.We adore you.respect you，and appreciate you.We don’t tell you enough——we probably don’i tell you ever.I wish we could take you with us to the next 12 grades.
1.Why did the author’s tears come down on her daughter’s first day of kindergarten？
A. She hadn’t made full preparations for her daughter.
B. Her daughter wasn’t willing to go to kindergarten.
C. She felt worried about her daughter’s being away.
D. Her daughter wasn’t familiar with the teachers.
2.The author noticed the teacher’s characteristics when .
A. she stood on the playground B. she was at the open house
C. she said goodbye to the teacher D. she Worked as a teacher at lunch time
3.What does the underlined word "veteran" in paragraph 3 mean？
A. Beautiful. B. Generous. C. Skillful. D. Humorous.
4.What is this text mainly about？
A. Good wishes to a kindergarten teacher. B. Kid’s daily behavior in the kindergarten.
C. A sweet memory of kindergarten life. D. Sincere thanks to a kindergarten teacher.
听下面一段独白，回答以下小题。
1.What products does the speaker's company work on?
A. Birthday cards. B. Games. C. Cars.
2.How many playing pieces does Mindtwist standard have?
A. Two. B. Four. C. Six.
3.What are the playing pieces of Mindtwist Travel made of?
A. Plastic. B. Wood. C. Metal.
4.What will the speaker talk about next?
A. Collect. B. Mindtwist. C. Board.
听下面一段较长对话，回答以下小题。
1.What did the boy have for breakfast?
A. Bread and milk. B. A cheese burger and meat. C. A pudding and two cans of coke.
2.Why did the boy have a stomachache?
A. He ate too fast. B. He ate too much. C. He ran too fast.
3.What do we know about the boy?
A. He felt hungry after the PE lesson.
B. He got a good record in the PE test.
C. He only ate meat and rice for lunch.
4.What does the woman think of the boy's eating way?
A. Good. B. Strange. C. Silly.
