下列哪些生物与发充过程中可见的胚外膜的关系是正确的?() A.鱼——羊膜 B.蛙——

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问题:

下列哪些生物与发充过程中可见的胚外膜的关系是正确的?()

A.鱼——羊膜

B.蛙——尿囊

C.爬行类——卵黄囊

D.蛙——绒毛膜

考点:普通动物学普通动物学综合练习普通动物学综合练习题库
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下列各句中,加粗的成语使用恰当的一句是 [ ]

A.夜幕低垂,星光点点,风儿平息,鸟儿沉沉入睡,各种声音都万籁俱寂。只听到“滴滴答答”的钟声和母亲轻微的呼吸声。

B.1949年4月23日,在长江边上的一个小村落里,新中国海军诞生了;它的第一任司令员就是文韬武略的张爱萍 * * 。

C.演 员朱莉亚·罗伯茨在《麻雀变凤凰》中从妓女演到淑女,她的演技让观众赞叹不绝,但她演技的成熟并不是一蹴而就的。

D.许多菜肴具有养肝护肝的独特疗效,其中“红枣炒银耳”,红白相阃,晶莹剔透,不仅秀色可餐,更是护肝佳品。

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误码率是指二进制码元在数据传输系统中被传错的 【6】 

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半径为r、偏心距为e的凸轮,以匀角速度ω绕O轴朝逆时针向转动,AB杆长L,其A端置于凸轮上,B端为固定铰支座(图4-63)。在图示瞬时,AB杆水平,则此时AB杆的角速度ωAB为()。

A.A

B.B

C.C

D.D

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E

In the UK, most children have their midday meal at school, but in many schools, parents can choose what their children eat. The children can have a school lunch—a hot, cooked meal; or they can take a packed lunch with them, which usually includes cold food like sandwiches.

Often parents prepare lunches on the basis of what their children want. Cathy, a mother of three children, told us, “My children have packed lunches, because they say they hate school dinners. I make 3 packed lunches every morning, so we’re like a sandwich bar in our kitchen in the morning.”

However, another mother, Susan, made her choice based on the nutritious value of the food. She said, “My daughter always has school dinners. I think she probably gets healthier food by having a cooked lunch at school than she would if I made sandwiches.”

But how healthy are school dinners? Kaz, a father, wasn’t impressed with them. “Fizzy (有泡沫的) drinks were offered and I think there were a lot of chips.”

The question of how healthy school food is was brought to Jamie Oliver, who launched a campaign to improve children’s nutrition, after spending a year working in a school kitchen. The TV series about the campaign won an award this week.

He was horrified (惊恐的) at the junk food he saw being served, which included burgers, pizza and chips.  He decided to ban the junk, and started cooking good stews (炖菜) and curries for the children instead.

Jamie improved the school dinners in that particular school, and trained the dinner ladies to cook healthy food. Then he put pressure on the government to improve the standards of school food across the country. And it looks as if the changes have begun.

57 What would be the best title for the passage?

A. School Dinners           B. Healthy Food

C. Dinners in the UK         D. Research on Dinners

58. The underlined phrase “on the basis of” in the second paragraph probably means “______”.

A. by comparison           B. according to

C. in spite of               D. for the good of

59 We can learn from the passage that ______.

A. in Britain, all children have their lunch at school  

B. Cathy’s children like school dinners

C. stews and curries are healthy food

D. Jamie Oliver works in a school kitchen

60. Which of the following can be inferred from the passage?

A. There are many schools in Britain.

B. Susan chooses food for her daughter according to its nutrition.

C. In the past, the food provided by British schools was not healthy enough.

D. None of the parents in Britain like school food.

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血压、冠心病、恶性肿瘤、糖尿病、消化性溃疡、哮喘和偏头痛等多种疾病与不良情绪有关,将此类疾病称为()

A.生理疾病

B.心理疾病

C.精神疾病

D.心身疾病

E.神经疾病

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