填空题
(The age of) a geological sample can (be estimated) from the ratio of radioactive to nonradioaetive carbon (present) in the object (is examined). A. The age of B. be estimated C. present D. is examined
【参考答案】
D
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School counselors (are convinced) that it will be obligatory that everyone (must have) (some computer training) in order to (enter) the job market.A. are convinced B. must have C. some computer training D. enter
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(Even) (a one-minute) delay will destroy (arrangements of) the meeting if you don’t schedule your time (well).A. Even B. a one-minute C. arrangements of D. well
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