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问题 多项选择题

根据《人民币银行结算账户管理办法》的规定，存款人开立()账户实行核准制度，经中国人民银行核准后由开户银行核发开户许可证。

A.基本存款账户

B.一般存款账户

C.临时存款账户

D.个人银行结算账户

答案

参考答案：A, C

选择题

下列4个图象分别表示4种操作过程，其中正确的是（　　）

A．

加热氯酸钾制取氧气

B．

向pH=12的NaOH溶液中逐滴加入稀硝酸

C．

向硫酸溶液中加入镁粉

D．

测定不同温度下NaCl和Ca（OH）2的溶解度
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单项选择题

It is clear that some chemicals can damage the health of animals and humans. (1) , this is not the only problem that (2) be caused by the careless use of chemicals. Chemicals can also (3) the ecological balance of the environment. If the ecological balance is disturbed, the results can be (4) serious.The (5) of DDT illustrates the problem. DDT, a chemical which kills insects, at first seemed to be a perfect answer (6) many problems. It would control insects that caused dangerous diseases, (7) insects that caused billions of dollars of damage to crops every year. Governments permitted and even (8) the use of DDT. Farmers in many countries (9) to spray it on their crops. The (10) results were good. Damage to crops (11) down, and profits went up. However, the chemical had effects which the scientists didn’t see in (12) . First, it also killed insects which were the (13) enemies of the harmful insects and which were therefore beneficial to farmers. Second, and perhaps worse, DDT did not kill (14) harmful insect. A few insects had natural resistance to the chemical. They (15) and reproduced in large numbers. In a few years there were large numbers of insects which were not (16) by DDT, and there were (17) insects which Could act as natural (18) on these new "super-insects". Finally, it became clear that DDT was not solving the insect problem. In fact, it was making the problem worse. It (19) became necessary to find a second (20) for the effects of the first.

第（8）空应选择（）

A．asked

B．requested

C．declared

D．encouraged
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