问题 单项选择题

14岁男孩,头晕、乏力,牙龈出血半年,查体:贫血貌,皮肤可见散在瘀点,肝、脾、淋巴结不大,疑为再生障碍性贫血,哪项最有助于诊断()

A.全血细胞减少

B.网织红细胞计数降低

C.正细胞正色素性贫血

D.骨髓增生低下,造血细胞减少,非造血细胞增多

E.骨髓细胞培养集落生长能力降低

答案

参考答案:D

解析:全血细胞减少,网织红细胞绝对值减少,肝脾无肿大时应考虑再障,骨穿可确诊。骨髓象特点为:增生低下,造血细胞减少。非造血细胞增多。

阅读理解

In the past ten years, many scientists have studied the differences between men and women. And they all got the same answer: The sexes(性别) are different, because their brains are different. And this, the scientists say, makes men and women see the world in different ways.

Boys, for example, generally are better than girls at mathematical ideas. Boys also generally are better than girls at the kind of hand and eye movements necessary for ball sports. Girls, on the other hand generally start speaking earlier than boys. And they generally see better in the dark than boys and are better at learning foreign languages.

What makes men and women better at one thing or another? The answer is the brain. The brain has two sides connected by nerve(神经) tracks. The left side generally is used for mathematics, speech and writing. The right side is used for artistic creation(创造) and the expression for emotions(情感). In men and women, different areas in each side of the brain develop differently. In boys, for example, it’s the area used for mathematics. In girls, it is the area used for language skills. Another interesting difference is that the two sides of a man’s brain are connected by a smaller number of nerves than the two sides of a woman’s brain are.

小题1:Which of the following is the best title of the article?

A.Research on the Brain

B.Men and Women are Different in Brain

C.People’s Different Brains

D.Who Are Better, Boys or Girls小题2:__________ men and women think differently.

A.The different brains make

B.Sex makes

C.The different experiences make

D.The influences(影响) of society make小题3:According to the article, girls are generally better than boys at __________ in your school.

A.mathematics

B.physics

C.English

D.chemistry小题4:Which of the following is true?

A.The left side of brain in boys generally develops better than that in girls.

B.The left side of brain in girls generally develops better than that in boys.

C.Men are better than women in all things.

D.The area in girls used for language skills develops better.小题5:60. The number of nerves connecting the two sides of the brain in men __________.

A.is the same as women’s

B.is different from women’s

C.is larger than women’s

D.is twice as large as women’s

多项选择题