一只雌猫一次产了三只小猫,这三只小猫在毛色上并不完全相同,这说明生物具有() A

题型:选择题

问题:

一只雌猫一次产了三只小猫,这三只小猫在毛色上并不完全相同,这说明生物具有(  )

A.普遍性

B.变异性

C.进化性

D.适应性

考点:变异生物的遗传和变异
题型:选择题

食盐、蔗糖、醋酸、纯碱、汽油、明矾等是日常生活中经常使用的物质,下列有关说法或表示正确的是 [ ]

A.食盐溶于水形成的分散系,能发生丁达尔效应

B.蔗糖和醋酸都是弱电解质

C.纯碱是碱

D.明矾经水解可得到氢氧化铝胶体,1 L 0.2 mol/L的氢氧化铝胶体中含有氢氧化铝胶粒数小于0. 2NA

题型:选择题

龙胆泻肝丸使用注意事项有()

A.老人慎用

B.儿童慎用

C.孕妇慎用

D.肾功差慎用

E.肾功的监测

题型:选择题

1分子丙酮酸彻底氧化产生()

A.12.5分子ATP

B.12分子ATP

C.10.5分子ATP

D.10分子ATP

E.2分子ATP

题型:选择题

ABO亚型主要特征是()。

A.与抗A和抗B试剂无凝集反应

B.与A细胞和B细胞试剂无凝集反应

C.只做正定型试验即可判定

D.抗体弱

E.抗原性弱

题型:选择题

第三部分:阅读理解:(共20小题;每小题2分,满分40分)阅读下列短文,从每题所给的四个选项中,选出最佳选项。

(A)

What makes a house a home? A home is a place of companionship with people in it who love each other, who are harmonious (和谐的) and closer with one another than with those in the workplace or with classmates at school. A home is a place that’s so magnetic(有吸引力的) that it’s difficult to leave. In a home there is love, sharing and appreciation, and the members help one another.

I have seen families on the street. But if they live, sleep, talk, and eat together, they are a family, even if they are poorly off. You don’t need a roof to make a home. The truly homeless are some of the rich people who build multi-million-dollar houses and are too busy to really live in them. The truly homeless are those who have turned their home into a hotel lobby. The parents work and the children misbehave. They don’t talk and eat together every day. They rarely see each other. The truly homeless people are those with babysitters, caretakers, gardeners and maids. However, people are unaware of this, as they are too busy making money outside the home that they don’t live in. This is another way of looking at the rich and the homeless. Who is to be pitied?

Control of the computer and the Internet is also important to make a house into a home. If the computer is on all the time, the house turns into an office, even if everyone is at home. Many homes these days are just offices. Human communication has stopped. The computer eats up all the time that one should be giving to others within the home. Using the computer moderately gives us time for play and communication, not with a screen, but with other people.

56. Which of the following may serve as the best title for this passage?

A. How to make a house a home?

B. What makes a house a home?

C. Who are truly homeless?

D. What is a home for?

57. The purpose of the first paragraph is to _________.

A. tell us that where there is home there is love

B. tell us what people think a home is

C. tell us the author’s concept(理解)of home

D. tell us how to have a happy home

58. The underlined word “those” refers to ________.

A. people who build multi-million-dollar houses

B. people who have lost their family members

C. people who don’t spend time with the family

D. homeless families living on the street in America

59. Which of the following is FALSE according to the passage?

A. A home is a place where you are willing to stay.

B. Even the poorest people can have a happy home.

C. Computers and the Internet are important for a happy home.

D. Sometimes it’s the rich that should be pitied.

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