According to the time table , the train for Beijing______ at seven o’clock in the evening .

　 A. leaves 　 B. has left

　 C. was left 　 D. will leave

请依据以下信息写一则通知。（120词左右）

1) 活 动 英语演讲比赛（English-speaking Contest）

2) 目 的 提高英语口语

3) 组 织 者 学生会(the Student Union)

4) 参加范围 高中(senior)学生

5) 报名时间 5月25日以前 (报名:sign up)

6) 报名地点 学生会办公室

7) 比赛时间 6月9日下午4：00

8) 比赛地点 教学楼5楼礼堂（auditorium）

9) 奖 励 前5名

他完全专心于他的业务。

He ____________________________ his business.

I was talking to Hilda on the phone ________ the signal was cut off.

A．after　　　　 B．when　　　　 C．because D．since

It was _______ back home after the experiment.?

A.not until midnight did he go?

B.until midnight that he didn’t go?

C.not until midnight that he went?

D.until midnight when he didn’t go

Scientists have developed a new cancer drug. So far, they have tested it only in laboratory animals. The drug

is designed to enter and kill cancer cells, but not healthy cells.

　 First, the drug enters the cancer cells and stops their supply of blood. Then it releases poison to destroy the

cancer cells.

Researchers at the Massachusetts Institute of Technology(MIT) in Cambridge carried out the study. The results appeared in Nature magazine. A school report called the drug an “anticancer smart bomb”.

Ram Sasisekharan is a professor at MIT. He says that his team had to solve three problems. They had to find a way to destroy the blood vessels, then to prevent the growth of new ones. But they also needed the blood vessels to supply chemicals to _________.

So, the researchers designed a two-part “nanocell”. The cell is measured in nanometers(毫微米), or one thousand millionth of a meter.

The scientists say thay that it was small enough to pass through the blood vessels of the cancer, but it was too big to enter normal blood vessels. The surface of the nanocells also helped them to avoid natural defenses.

The scientists designed the cell as a balloon inside a balloon. They filled the outer part with a drug that caused the blood vessels to die. That cut off the blood supply and put the nanocells inside the cancer. Then, the nanocells slowly released drugs to kill the cancer cells.

The team says that the treatment killed the cancer and avoided healthy cells better than other treatments. Untreated mice with cancer survived for twenty days. The scientists say that mice with the best current treatments lived for thirty days. In this study, they say that eighty percent of the mice treated with the nanocells lived more than sixty-five days.

The scientists say that more studies are needed before the new drug can be tested in humans.

1. What’s the best title of the passage? (please answer within 10 words.)

________________________________________________________________________

2. Which sentence in the passage can be replaced by the following one?

　 Scientists haven’t tested the drug on humans, and only in lab.

　 ____________________________________________________________________________

3. Please fill in the blank in the fourth paragraph with proper words or phrases to complete the sentences. ( please answer within 10 words.)

　 ___________________________________________________________________________

4. Do you think cancer can be cured in the future? Why? (please answer within 30 words.)

________________________________________________________________________

5. Please translate the underlined sentence in the eighth paragraph into Chinese.

________________________________________________________________________

Was it _______he said or something ____he did that made her cry so sadly?

　 A. that; that　　　　　 B. what; that　　　 C. that; what　　　　 D. what; what

We can’t continue to pretend that the problem of homelessness doesn’t ______ in this city.

　　A. exist 　　　　 B. live　　 　　 C. be　　 　　　 D. survive