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【多选题】
有酶的描述不正确的是( )A.
核酶催化的底物是RNA
B.
核酶催化的底物是蛋白质
C.
核酶具有内切核酸酶的功能，但不具有连接酶的功能
D.
核酶可有锤头型核酶和发夹型核酶
E.
核酶催化的机制是亲核攻击的转酯反应
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皮皮学刷刷变学霸
举一反三
【简答题】When we design speaking activities we should try to use _______ that are closely related to students’ life.
【单选题】At present we should try to use more ____ facilities.
A.
save-energy
B.
energy-saved
C.
saving-energy
D.
energy-saving
【单选题】In order to make our writing more vivid and precise, we should try to use more _____.
A.
long words
B.
short words
C.
general words
D.
specific words
【单选题】We should try to use ___ money and do ___ work.
A.
little: many
B.
less: more
C.
fewer: more
D.
more: less
【判断题】When we want to use questions to begin the opening paragraph, we should try to use tempting, surprising or controversial questions so as to grab the readers’ attention.
A.
正确
B.
错误
【判断题】While writing English articles, we should try to use long and complex sentences as many as possible.
A.
正确
B.
错误
【简答题】We should try to use some useful ___________ (express) when learning a foreign language.
【单选题】When we are writing an essay, we should try to use ______.
A.
formal and common words
B.
informal words
C.
clichés
D.
slangs
【单选题】某旅游团在境外与多个外国旅游团一起用自助餐时,部分团员一到餐厅就蜂拥而至,并大声招呼同伴,对这种不文明的行为,领队应采取的( )办法予以劝阻。
A.
对比引导
B.
旁敲侧击
C.
因势利导
D.
以退为进
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