问题 解答题

香菇不是微生物.______.

答案

微生物是一切肉眼看不见的或看不清的微小生物的总称 个体微小,一般<0.1mm.构造简单,有单细胞的,简单多细胞的,非细胞的,进化地位低.包括细菌、病毒、真菌以及一些小型的原生动物等在内的一大类生物群体,它个体微小,却与人类生活密切相关.微生物在自然界中可谓“无处不在,无处不有”.

 香菇属于多细胞真菌,属于我们喜爱食用菌,有大量的菌丝构成的,每个细胞结构为:细胞壁、细胞核、细胞质、细胞膜和液泡等,体内不含叶绿体,营养方式为异养,必须以现成的有机物为食,从中获得生命活动所需的物质和能量,都能产生大量的孢子,靠孢子来繁殖新个体.因此香菇不是微生物说法错误.

故答案为:×

问答题
阅读理解

You might not know it, but there is something wonderful at your fingertips. You can make people happier, healthier and more hard-working just by touching their arms or holding their hands.

Doctors say that body contact is a kind of medicine that can work wonders. When people are touched, the quantity of hemoglobin (血红蛋白)-a type of matter that produces the red color in blood increases greatly. This results in more oxygen reaching every part of the body and the whole body benefits. In experiments, bottle-fed baby monkeys were separated from their mothers for the first ten days of life. They became sad and negative. Studies showed the monkeys were more probable to become ill than other babies that were allowed to stay with their mothers.

Human babies react in much the same way. Some years ago, a scientist noticed that some well-fed babies in a clean nursery became weak. Yet babies in another nursery were growing healthily, even though they ate less well and were not kept as clean. The reason, he concluded, was that they often had touches from nurses.         

Experiments show that most people like being touched. And nearly all doctors believe touch helps to reduce patients' fear of treatment. Of course there is time when a touch is not welcome. But even if we don't like being touched, a smile can make us feel better. Smiling increases blood flow and starts the production of "happy brain" chemicals. So let's have a big smile and don't forget to keep in touch.

小题1:Which of the following is NOT true?

A.Everyone knows that body contact can make people happier.

B.People may work harder because of body contact.

C.Your fingertips can do something.

D.People may not understand the importance of touching.小题2:According to the passage _____.

A.human brains need oxygen and blood supply now and then

B.touches from doctors and nurses have nothing to do with treatment

C.new-born baby monkeys should stay away from their mothers

D.not all the people like being touched小题3:The word "benefits" in the second paragraph probably means _____.

A.to be useful or helpful

B.to get something useful or helpful

C.to be ill

D.to be hurt小题4:The best title for the passage might be _____.

A.Why People Touch

B.Smile and Touch

C.Wonders of Touch

D.Touch or Not