蝙蝠靠接收自己发出的回声,在黑夜中飞行和捕食.

题型:填空题

问题:

蝙蝠靠接收自己发出           的回声,在黑夜中飞行和捕食.

考点:超声波和次声波的定义
题型:填空题

阅读下面短文并回答问题 ,然后将答案写到答题卡相应的位置上(请注意问题后的词数要求) 。

[1] Today ,  millions of people want to learn or improve their English but it is difficult to find the best method. Is it better to study in Britain or America or to study in your own country?

[2]The advantages of going to Britain seem obvious. Firstly, you will be able to listen to the language all the time you are in the country. You will be surrounded completely by the language wherever you go. Another advantage is that you have to speak the language if you are with other people. In Italy, it is always possible, in the class, to speak Italian if you want to and the learning is slower.

[3] On the other hand, ______ staying at home to study. You don't have to make big changes to your life. As well as this, it is also a lot cheaper than going to Britain but it is never possible to achieve the results of living in the UK. If you have a good teacher in Italy ,I think you can learn in a more concentrated way than being in Britain without going to a school.

[4] So, in conclusion ,I think that if you have enough time and enough money,  the best choice is to spend some time in the UK. This is simply not possible for most people, so being here in Italy is the only viable(可行的)option. The most important thing to do in this situation is to     maximise  your opportunities to speak only English in class and to try to use English whenever possible outside the class.

小题1: What is the text mainly about?  (no more than 6 words)

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小题2:Complete the following statement with proper words.

All the people and everything around are related with _______,and you'll have more opportunities

小题3:Fill in the blank in paragraph 3 with proper words. (no more than 5 words)

____________________________________________________________________

小题4: What suggestion does the author give to those who learn English in their own country?(no more than 15 words)

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小题5: What does  the  underlined word “it”(line 2,paragraph3) probably  refer to?(5 words)

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题型:填空题

腔肠动物只达到组织水平的细胞分化,从扁形动物开始才具备了真正的器官()

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用来补偿传动轴轴向和角度的安装误差,以及汽车行驶过程中由于车架变形等引起的位移的是()。

A、万向节

B、传动轴

C、中间支承

D、悬架

题型:填空题

促使绝缘材料老化的主要原因,在低压设备中是(),在高压设备中是()。

题型:填空题

某高等院校学生钱某,大一考试作弊,大四毕业时才得知自己在大一时就已因作弊而被学校开除学籍,为此,钱某无法领取毕业证书。钱某就学校开除其学籍向市教育局申请复议。关于钱某复议申请期限的说法正确的是()

A.市教育局可以钱某已超过复议申请期限为由不予受理

B.复议申请的期限从学校告知钱某之日起计算

C.若学校有证据证明钱某已于大一知道该开除学籍决定的,复议申请的期限应自该证据材料证明钱某知道该开除决定之日起计算

D.钱某复议申请的期限不受限制

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