1 . Everyone in the village regarded him as a genius, ________ he went to college at the age of 14.

A．that

B．for

C．which

D．why

2 . ________ the internet, a blog seized my eyes that human footprints might ________ the ecosystem.

A．When I surfed; sharpen	B．When I was surfing; threaten
C．While surfing; sharpen	D．I surfed; threaten

3 . 他从沙漠中死里逃生后，详细地向朋友们描述了他的经历。(escape) (汉译英)

4 .          , you can turn to me for help.

A．However the problem is difficult	B．No matter how difficult is the problem
C．No matter how is difficult the problem	D．However difficult the problem is

5 . You should put yourself _________ you will be while bathing the baby and make sure that everything is easy to reach.

A．at which

B．in place that

C．where

D．from where

6 . No matter how _________, you can never be sure what the interviewer is going to ask.

A．you are prepared	B．are you prepared
C．prepared are you	D．prepared you are

7 . About 80% of all marine waste is plastic from bottles and packaging. This rubbish runs into rivers _________ it rains and then flows into the sea.

A．since

B．when

C．unless

D．until

8 . 这意味着咀嚼过快的人最终会吃太多食物，因为他们仍然感到饥饿。（主语从句和表语从句）

9 . 学生们没有抱怨研讨会的频率，因为他们意识到这次是他们需要把握的机会。（aware）（汉译英）

10 . The instant          he entered I saw by his face that it would be months         he left all this behind.

A．which … when

B．when … since

C．/… before

D．/… since