如图表示绿色植物叶肉细胞中重要生理过程,A和B是两种细胞器,①~⑥表示气体移动.

题型:解答题

问题:

如图表示绿色植物叶肉细胞中重要生理过程,A和B是两种细胞器,①~⑥表示气体移动.请分析回答:

(1)外界气体出入绿色植物体主要通过叶片的______这一结构.

(2)图中A和B代表的细胞器分别是______、______.

(3)在黑暗环境中,图中哪些箭头表示的生理活动不存在或大大减弱?(填序号)______

(4)两种细胞器中进行的生理活动有助于维持大气中的碳-氧平衡,以下对于碳-氧平衡的理解不合理的是______

A.碳-氧平衡是指生物圈中二氧化碳和氧气各占50%

B.碳-氧平衡是指生物圈中二氧化碳和氧气的相对平衡

C.植物的光合作用吸收二氧化碳,多植树有利于维持生物圈中的碳-氧平衡

D.人类生活和工业生产加剧了生物圈中二氧化碳的排放,将会打破碳-氧平衡.

考点:细胞中的物质和能量蒸腾作用呼吸作用绿色植物与生物圈中的碳—氧平衡
题型:解答题

Gap-filling.

     Think about two people you know. How would you describe their personalities? Are they the

s_________(1)? Of course not! Everyone is different. Even identical twins have different personalities.

     Some people are very outgoing (外向的) and friendly. They like to be w_________(2) other

people all the time. Maybe they like to be the centre of attention. And some people are quiet-maybe

even s_________(3). They can be friendly, too. But they like to be alone or with just a f_________(4)

friends.

     Some people worry a lot. They may worry about many things, such as their jobs, their families and

anything that may happen in the future. H_________(5), some people don't worry about anything! They

n_________(6) mind what is going on next. These people are very relaxed.

     Some people are hard-working. They always do their b_________(7). But some people are lazy. They

don't care about d_________(8) things right or getting things done on time. Hard-working people always

get more chances than those lazy o_________(89) in life.

     And don't f_________(10) this: Everyone is different. That means you are special!

题型:解答题

Jack likes reading a newspaper    he is having breakfast.

A. while                   B. and             C. because

题型:解答题

变电站的一次设备有(),(),(),(),(),()等等。

题型:解答题

近代法国法律制度的纲领性文件是()

A.独立宣言

B. * * 法案

C. * * 宣言

D.权利法案

题型:解答题

With the sudden onset of severe psychotic symptoms, the individual is said to be experiencing acute schizophrenia (精神分裂症). "Psychotic" means out of touch with reality, or unable to separate real from unreal experiences. Some people have only one such psychotic episode. Others have many episodes during a lifetime but lead relatively normal lives during interim periods. The individual with chronic (continuous or recurring) schizophrenia often does not fully recover normal functioning and typically requires long-term treatment, generally including medication, to control the symptoms. These symptoms may include hallucinations (幻觉), incoherence, delusions, lack of judgment, deterioration of the abilities to reason and feel emotion, and a lack of interaction between the patient and his environment. The hallucinations may be a visual, auditory, or tactile. Some chronic schizophrenic patients may never he able to function without assistance of one sort or another.

According to this passage, thinking that one can fly might be an example of ______.

A.medicine overdose

B.being out of touch with reality

C.recovering normal functioning

D.symptom control

更多题库