下列有关孟德尔豌豆杂交实验的叙述,正确的是[ ] A.孟德尔在豌豆开花时进行去雄

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问题:

下列有关孟德尔豌豆杂交实验的叙述,正确的是[ ]

A.孟德尔在豌豆开花时进行去雄和授粉,实现亲本的杂交

B.孟德尔研究豌豆花的构造,但无需考虑雌蕊、雄蕊的发育程度

C.孟德尔根据亲本中不同个体表现型来判断亲本是否纯合

D.孟德尔利用了豌豆自花传粉、闭花受粉的特性

考点:生物的性状
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每一个劳动者在其一生中总会遇到生、老、病、死、失业等风险,而承担这些风险,仅靠个人的力量是难以奏效的,必须依靠(  )

A.劳动法

B.劳动者工资

C.社会保障制度

D.劳动合同

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Today is my first day at Merchiston Castle School,and I was really nervous about it, because I have never visited the school before and didn’t take any summer course. Despite my anxiety,I soon relaxed once I arrived; the staff were so nice that I felt my spoken English was better than it actually was! As soon as I walked into the dayroom of my boarding house,I was absolutely(完全地) amazed by the friendly atmosphere; everyone was so friendly that a boy as shy as I had no difficulty in setting in,and I made many new friends on my very first day,although I was struggling to remember all the names.

Also I realized there were other international students in the house from all over the world,such as South Korea,Japan and Russia.Although their English was not so fluent,it didn’t take long for us to understand each other at all.In some ways,it was even better to practice Enlgish by speaking to the international students,because we were both learning.

As a boarder,the quality of food is something I consider very important,and Merchiston has not let me down.The school kitchens are run by a professional catering company,and the quality of food is excellent,also they take the issue of a healthy diet really seriously.I remember once I was asked to take more salad for my meal by a member of the kitchen staff for I did not have enough vegetables.This brings to another point of being a boarder:you need to learn how to look after yourself and be responsible for yourself.One of the huge advantages of being a boarder is that we can have breakfast in the school,which means we don’t have to pull ourselves out of the bed as early as the daypupils!

小题1:Why was the writer nervous when he was at Merchiston Castle School on the first day?

A.Because he had no friends and relatives there.

B.Because he didn’t know the school well.

C.Because he was not good at English.

D.Because he was shy.小题2:On the first day,        .

A.though the writer was anxious,he soon relaxed

B.he found the dayroom of his boarding house terrible

C.he made many new friends,but he didn’t remember any of their names

D.he thought he spoke English better than the staff in the school小题3:Which of the following is WRONG according to the passage?

A.In the boarding house,there are only students from South Korea,Japan and Russia.

B.The international students in the boarding house don’t speak Englsih very fluently.

C.The food in Merchiston doesn’t make the writer disappiointed.

D.The professional catering company thinks the issue of a healthy diet is very important.小题4:The underlined word“boarder”in the first paragraph means“      ”.

A.a student who is from abroad

B.a student who lives at school

C.a student who is good at English

D.a student who used to be shy

题型:选择题

在实际运行时,管网能自动调整各并联管路的流量。

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在烹调中,一般把烹制菜肴时()称为火候。

A.所用火力的大小

B.所花时间的长短

C.所用火力的强弱

D.所用火力的大小和所花时间的长短

题型:选择题

一个公司将与公司生产的前后工序相关的公司并购过来的并购行为是()。

A.横向并购

B.纵向并购

C.混合并购

D.股权并购

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