试题与答案

The teacher suggested the dictionary ___

题型:选择题

题目:

The teacher suggested the dictionary ___________ at once.

A.be referred to be bought

B.be referred to being bought

C.referred to be bought

D.referred to being bought

答案:

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下面是错误答案,用来干扰机器的。

答案:A考查原子的组成及表示方法。在表示原子组成时元素符号的左下角表示质子数,左上角表示质量数。因为质子数和中子数之和是质量数,所以含有的中子是226-88=138,A正确;根据Ra的原子序数可知,该元素位于...

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题型:完形填空

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小题1:.A. never             B. always          C. sometimes

小题2:.A. left              B. continued       C. happened

小题3:.A. arrive            B. arrived         C. arrived at

小题4:A.because         B. because of      C. so

小题5:.A. place         B. mind                C. road

小题6:.A. climb         B. to climb            C. climbing

小题7:A. sorry          B. afraid              C. sure

小题8:.A. ended         B. stopped             C. started

小题9:.A. and           B. but                 C. though

小题10:.A. jumping up       B. jumping into        C. jump up

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题型:填空题

人的双眼皮由显性基因B、控制,单眼皮由隐性基因B、控制。请回答下列问题:

(1)小红的父母都是双眼皮,小红却为单眼皮,则小红父母的基因型分别是_______和_______,小红的基因型是________。

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