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Guam is a beautiful, small island in the...

Guam is a beautiful, small island in the Pacific Ocean. You’ll find happy songbirds, clear blue water, and leafy forest there. But the small island has a big problem: snakes. There are about 2 million brown tree snakes living in Guam.

The snakes likely arrived in the 1940s. They probably slipped(滑行) unseen onto ships and planes heading to Guam. Once there, the snakes laid eggs. Snake families grew. The snakes have no natural enemies to eat them on Guam. Soon, the island was covered with these snakes.

The brown tree snake has had a devastating effect. The snakes eat birds. There used to be 12 kinds of birds on the island. But these snakes have killed off nine kinds of the birds. The snakes can grow to be 10 feet long. They often bite humans. They climb onto power lines and make the electricity go out. This causes millions of dollars in damage.

Scientists have tried many different ways to control the number of snakes. They have used snake traps and snake-sniffing dogs. Nothing seemed to work. Nothing, that is, until they found a surprising secret weapon: killer mice.

Scientists found out that there is one easy way to kill brown tree snakes. They could give them a medicine called Tylenol. People take Tylenol for headaches and other pains. Even a little bit of Tylenol can kill a brown tree snake.

But how would scientists get the tree snakes to eat Tylenol? They came up with a plan. First, the experts put the medicine into dead mice. Then they attached each mouse to a mini paper parachute(降落伞). Planes dropped the mice over Guam. The parachutes got caught in the trees. The mice became dinner for the snakes that live there.

Has it worked? So far, research shows that there are fewer snakes because of the mice. The worry is that it may be too late to clear the snakes, but Mr. Vice from Guam’s Department of Agriculture says this should not stop the islanders from trying. “Our long-term goal is to kill the snake off completely,” he says.

1.What can we learn about the brown tree snakes?

A. They were shipped to Guam on purpose.

B. They were not native to Guam.

C. They were at risk in the 1940s.

D. They grew very slowly.

2.What does the underlined word “devastating” in Paragraph 3 mean?

A. Magical.

B. Interesting.

C. Short-term.

D. Damaging.

3.What was a more workable way to kill the brown tree snakes?

A. Using snake traps.

B. Putting Tylenol in the trees.

C. Bringing in their enemies.

D. Letting them eat Tylenol carried by mice.

4.What does Mr. Vice think of solving this snake problem?

A. He is proud of it.

B. He is hopeful of it.

C. He is doubtful about it.

D. He is unconcerned about it.

 

1. B 2. D 3. D 4. B 【解析】 这是一篇夹叙夹议的文章。文章主要讲了关岛是一个美丽的地方,但是有一个很大的问题——到处是棕树蛇。杀死棕树蛇一个有效的方法是让它们吃老鼠携带的泰诺,关岛农业部的Vice先生鼓励岛民们尝试,希望未来可以彻底消灭蛇。 1.推理判断题。答案定位在第二段The snakes likely arrived in the 1940s. They probably slipped(滑行) unseen onto ships and planes heading to Guam.(蛇可能是在20世纪40年代出现的。它们可能趁人不注意溜上了前往关岛的船只和飞机。)由此推断出棕树蛇不是关岛的本地物种,故选B。 2.词义猜测题。下文The snakes eat birds. There used to be 12 kinds of birds on the island. But these snakes have killed off nine kinds of the birds. The snakes can grow to be 10 feet long. They often bite humans. They climb onto power lines and make the electricity go out. This causes millions of dollars in damage.说蛇吃鸟。岛上曾经有12种鸟类。但是这些蛇已经杀死了九种鸟类。蛇可以长到10英尺长。它们经常咬人。他们爬上电线,让电力供应中断。这造成了数百万美元的损失。说明了这种蛇的危害性很大,由此推断出“devastating”意思是毁坏,A. Magical.有魔力的;B. Interesting.有趣的;C. Short-term.短期的;D. Damaging.损害的,故选D。 3.推理判断题。答案定位在最后一段Has it worked? So far, research shows that there are fewer snakes because of the mice.结合上一段落,可知杀死棕树蛇一个有效的方法是让它们吃老鼠携带的泰诺,故选D。 4.推理判断题。答案定位在最后一段but Mr. Vice from Guam’s Department of Agriculture says this should not stop the islanders from trying. “Our long-term goal is to kill the snake off completely,” he says.(但是关岛农业部的Vice先生说:“这不应该阻止岛民的尝试。我们的长期目标是彻底消灭蛇。”)由此推断出Vice先生对解决蛇的问题满怀希望,故选B。
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Have you ever imagined taking the SAT or ACT in middle school? Duke TIP(Talent identification Program) gives younger students an opportunity to take these standardized tests, which are used for college admissions(录取).

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B. Offering programs for students in Duke.

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