18.??_______ that my head had cleared, my brain was also beginning to work much better. A. For B. Now C. Since D. Despite ...

13.??The last half of the nineteenth century _______ the steady improvment in the means of travel. A. has witnessed B. was witnessed C. witnessed D. is witnessed ...

8.??He gives people the impression _______ all his life abroad. A. of having spent B. to have spent C. of being spent D. to spend ...

3.??All things _______, the planned trip will have to be called off. A. considered B. be considered C. considering D. having considered ...

18.??Once environmental damage _______, it takes many years for the system to recover. A. has done B. is to do C. does D. is done ...

13.??The soldier was _____of running away when the enemy attacked. A. scolded B. charged C. accused D. punished ...

8.??In general, the____amount that a student spends for housing should be held to one- fifth of the total for living expenses. A. acceptable B. advisable C. available D. applicable ...

3.??You cannot be _______ careful when you drive a car. A. very B. so C. too D. enough ...

18.??All the memories of his childhood had _______ from his mind by the time he was 65. A. faded B. illustrated C. confined D. concerned ...

13.??Atzel＇s face lit up with a smile and he said, “You see, I was right." （选择与划线词意思相近的词） A. looked prettier B. turned red C. burned hot D. became brighter ...