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【判断题】
康普顿效应中，出射光线的成分中不仅有入射光线波长相同的成份，还有大于入射波长的成份。A.
正确
B.
错误
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举一反三
【单选题】All flights ______ because of the heavy storm, we decided to take the train.
A.
having canceled
B.
being canceled
C.
having been canceled
D.
canceled
【单选题】---- Are we going sightseeing next week? ---- No. The plan ________ at the second meeting.
A.
had cancelled
B.
was cancelled
C.
has been cancelled
D.
would cancel
【单选题】为了缓解民众 “看病贵”的问题,我国对基本药物实行政府限价,但由于企业利润得不到保障,一些低价药屡屡“玩失踪”,导致部分群众购药需求难以得到满足。为了解决低价药物的供给问题,需要政府( ) 1按照价值规律的要求进行宏观调控 2明确规定企业负有保障低价药物供应的责任 3加大对生产低价药物企业经营管理干预的力度 4以税收优惠等政策对生产低价药物企业提供支持
A.
①②
B.
①④
C.
②③
D.
③④
【单选题】Cancer Drug Trials Often Halted Early An increasing number of clinical trials for new cancer treatments are being halted before the risks and benefits have been fully evaluated, say Italian researcher...
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】What is the best title for this passage?
A.
Development of cancer research.
B.
Childhood cancer and pollution.
C.
Engine exhausts.
D.
Pre-natal care.
【单选题】A new study has found no evidence that the sunscreen, commonly used to reduce the risk of skin cancer, actually____ the risk. [ ]
A.
increase
B.
increasing
C.
increases
D.
having increased
【简答题】收益性物业的运营费用是除抵押贷款还本付息和房产税之外发生的费用。
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