题干

图为光照条件下一个叶肉细胞中两种细胞器之间的气体交换示意图,据图回答(在[]中填序号,在横线上填名称):

(1)图中所示的细胞器A是____,B是____ .

(2)图中物质a是____,它是在[____ ]____ 部位产生的.

(3)图中A、B两种细胞器都能产生的直接能源物质是____  ,细胞器B产生此物质的部位是[____ ].

上一题 下一题 0.0难度 选择题 更新时间:2016-12-05 08:29:12

答案(点此获取答案解析)

叶绿体,线粒体,氧气,③,类囊体,ATP,⑥⑦(⑧)

同类题4

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

    One day, a lady bought some bath soaps from a shop. When she opened one of the packets, she found that it had no soap; it was just an empty wrapper! She made a 1 against the factory and got her money back with a successful claim. That being 2, there was a task before the management of the soap factory. How had this happened? How could they3 that the incident would not occur again?

    After a detailed 4, it was discovered that during the 5 of wrapping, it so6 that one or two wrappers did get through without any soap in them! There was no way to 7 the difference between a full wrapper and an empty one. The process of handling each one separately for this purpose seemed to be very difficult. So, the technical 8 was given the job of finding a method to 9 the problem. The man prepared a detailed report and suggested setting up a computer-based system that would weigh and scan each bar, for the empty packs could not be 10 by a normal x-ray machine.

    The management heard him out and passed the 11 to release some money to buy the new machinery that he had asked for . An 12 worker said, “Excuse me, Sir, 13 my rudeness, but I have a 14 that will cost a tiny amount of what you are planning to spend.”

    The management 15 in the beginning. But 16, they heard him out and agreed to try out his suggestion. The next day, the worker brought a strong industrial fan. He put it at an angle near the 17 belt, on which the packed soap bars were coming through, and 18it on. The few empty wrappers that came through got 19 by the fan! A simple solution for a 20 problem!

    This proves that the educated do not have a patent on good ideas.