2. Scientists have tried many ways this prob- lem.

   A. solve        B. to solve

   C. of solving   D. both B and C

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：

6. 一I have tried very hard to find a solution to the problem, but in vain.

—Why not consult with Frank? You see, .

   A. great minds think alike

   B. two heads are better than one

   C. a bird in the hand is worth two in the bush

   D. it's better to think twice before doing something

查看答案和解析>>

科目：高中英語 來源： 題型：

    8. Professor David will give us a lecture on Western culture,but when and where yet.

       A. hasn’t been decided   B. haven’t decided   C. isn’t being decided   D. aren’t decided

查看答案和解析>>

科目：高中英語 來源： 題型：

2. “To have been caught in a sandstorm was a terrible experience,” he said.

翻譯.

仿寫路上遇到了交通堵塞，所以他來晚了。

查看答案和解析>>

科目：高中英語 來源： 題型：

7. Sandstorms a major disaster for many Asian countries for centuries.

   A. were        B. are

   C. have been   D. will be

查看答案和解析>>

科目：高中英語 來源： 題型：


be caught in  ;cut down  ;masses of  ;one after another;  in the process of  ;as a result of

1. The surface of our earth is covered with water.

2. It was time for a break and we came out of the classroom

3. She died her injuries.

4. The company is moving to new offices.

5. The ship a terrible storm and lost its control.

6. There are many people who want to earn some money by trees.

查看答案和解析>>

科目：高中英語 來源： 題型：

5. Citizens wake to an orange sky and strong winds that cover the city a thick,brown- yellow dust.

查看答案和解析>>

科目：高中英語 來源： 題型：

2. adj. ： causing fear or terror

查看答案和解析>>

科目：高中英語 來源： 題型：

3. Please (帶走你的垃圾) when you leave here.

查看答案和解析>>

同步練習(xí)冊(cè)答案