一Whom would you like to be your assistant，Jack or David？ 一If I had to choose，David would be__________choice.

These natural resources will be______sooner or later if the present rate of exploitation continues.

：不管外界对大学英语四、六级考试有怎样的非议，每年的四、六级考试还是_________地进行着，不少高校的学位证书仍然与大学英语四、六级考试挂钩着，大学英语四、六级考试成绩依然神气着……当大学英语四、六级考试_________成只为一纸证书考试时，大学英语四、六级考试就已经变得_________了。 填入画横线部分最恰当的一项是（ ）。

不管外界对大学英语四、六级考试有怎样的非议，每年的四、六级考试还是________地进行着，不少高校的学位证书仍然与大学英语四、六级考试挂钩着，大学英语四、六级考试成绩依然神气着……当大学英语四、六级考试________成只为一纸证书考试时，大学英语四、六级考试就已经变得________了。填入划横线部分最恰当的一项是（ ）。

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

My camera can be _____ to take pictures in cloudy or sunny conditions. ( )

Scientists say it may be five or six years _____ this medicine is tested on human beings.

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

______no air or water, there would be no life in the world.

Do you want to change this lamp for__________or do you want your money back?

表达式(8+3＞36.OR..T..AND.“A”-“B”$“ABC”)的运算顺序是______。

By saying “While it’s true that ..., be they scientific or artistic” (Lines 1-3, Para.5), the author means that _____.