Many scientists have believed that there may be a ______ of life on the Mars.
A.signal B.sign C.mark D.sigh
Tom succeeded ______ a movie star, though he failed ______ a doctor’s degree.
A.in becoming; in getting B.in becoming; to get
C.to become; to get D.to become; in getting
My new apartment ______ painted now, so I have to wait another month to move in.
A.is being B.has been C.is D.will be
The house ______ an old lady is in good condition.
A.belongs to B.is belonged to C.belonging to D.belonged to
We have spent thousands of years fighting for our survival. Yet now we have ____ that our planet is under threat. It’s time we woke up to the problems and started repairing the ____.
One of the major problems is the destruction of the rainforests in South America. They are ____ to half the world’s species and to millions of people. Moreover, the rainforests ____ the air by taking in carbon dioxide and giving out oxygen. The trees are being ____ for paper or to make room for cattle farms. So birds and animals ____ their homes and die. This destruction is also bringing about ____ in the climate, air pollution and flooding. If we ____ to burn and cut down the rainforests as we are doing now, the earth will ____ be the same.
Another big ____ is water pollution. Factories are ____ our rivers and lakes with dangerous chemicals. Tons and tons of waste are poured into our seas. ____, sea life is in danger.
___ pollution is another important issue. The cars and factories in and around our cities are giving off ____ gases. In the past few years, more and more people than ever before have breathing problems. If we don’t do something now, our cities will become ____ to live in.
___, it is not too late to solve these problems. We have the time, the money and even the technology to prepare the way for a better, cleaner and ____ future. We can plant trees and create parks for the species in danger. We can put pressure on those in power to ____. Together we can ____ our planet. All we need to do is open our eyes and act ____.
1.A.discovered B.guessed C.predicted D.forgotten
2.A.bridge B.image C.damage D.relationship
3.A.secret B.home C.hope D.belief
4.A.need B.heat C.clean D.produce
5.A.burned B.looked after C.planted D.cut down
6.A.find B.visit C.lose D.leave
7.A.changes B.recoveries C.differences D.improvements
8.A.fail B.start C.stop D.continue
9.A.still B.never C.always D.almost
10.A.choice B.problem C.goal D.view
11.A.sharing B.providing C.polluting D.connecting
12.A.For example B.As usual C.On the whole D.As a result
13.A.Air B.Noise C.Light D.Soil
14.A.pleasant B.unknown C.useless D.harmful
15.A.impossible B.illegal C.crowded D.healthy
16.A.Surprisingly B.Fortunately C.Interestingly D.Strangely
17.A.bigger B.safer C.longer D.simpler
18.A.take care B.take turns C.take risks D.take action
19.A.feed B.observe C.save D.destroy
20.A.immediately B.patiently C.politely D.slowly
Nowadays, more and more parents are using a new technology-home security systems, to keep an eye on their “home-alone” children. In the early days of home security, the systems were basically designed just to keep the bad guys out. 1. But be sure, when no adult is present, he or she knows how to do so safely.
Every child should memorize his or her own full name and address, and home, work and cellphone numbers of each parent. 2. If your child is too young to memorize the information, he or she may be too young to be home alone—for any time.
3. If a door or window is slightly open, the child has any reason to suspect someone has been in the house that shouldn’t be, have him or her call you, then wait at the nearby home of a neighbour who’s agreed to act as a safe house.
4. Besides, set a rule that he or she must never play outside the house when no one else is at home.
Be sure your child knows how to disarm (解除) and arm your home security system. Program your control panel (控制板) to give you a message when your child enters or leaves the house, and arms or disarms the system. 5.
If you want to learn more about home security systems that can help parents protect their “home-alone” children, you can visit www.ProtectAmerica.com.
A. Also keep this information posted next to the phone at home.
B. Teach your child to observe things when returning to the house.
C. At present, the systems are only intended for home-alone children.
D. Warn your home-alone child never to answer the doorbell or telephone.
E. You and your child should work together to use the home security systems.
F. Now, many parents are also using them to make their home-alone children safe.
G. If your child forgets to rearm the system, you can call him or her with a personal reminder.
