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【多选题】
关于《生活饮用水卫生标准》GB5749-2006描述正确的是A.
微生物学指标由2项增至6项。增加了大肠埃希氏菌、耐热大肠菌群、第鞭毛虫和隐孢子虫等4项；
B.
饮用水消毒剂由1项增至4项，增加了氯胺、臭氧、二氧化氯等项；
C.
毒理学指标中有机化合物，由原5项增至53项，并修订了四氯化碳的限值；
D.
放射性指标为4项
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【简答题】青年创业是未来国家经济活力的来源,
【单选题】—How you've changed! You _____ very short. —But I am not sure if I am taller than you now. [ ]
A.
are sure to be
B.
use to be
C.
are
D.
used to be
【单选题】I am not sure if you in the exam, but you will be better if you harder.
A.
succeed; work
B.
succeed; will work
C.
will succeed; work
D.
success; would work
【单选题】I am not sure if my wife wants me to go shopping with her on Sunday. If she decides to go with her sister instead, then I can play tennis with you. Let’s just .
A.
play with fire
B.
play off one against the other
C.
play it on her
D.
play it by ear
【单选题】I am not sure if you _______ in the exam, but you’ll be better if you_____ harder.
A.
succeed; work
B.
succeed; will
C.
will succeed; work
D.
will succeed; will succeed
【单选题】I am not sure if I ______time. If I______time, I will go there with you.
A.
will have; have
B.
have; have
C.
have; will have
D.
will have; will have
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