“一米线”实际上要求的是对别人隐私权的尊重，它是基于道德标准而提出来的一项措施。（    ）

阅读短文,判断正误。

    All the students in China are learning English, but how can they learn English well? Some students can know a lot about English, they can do some exercises, but perhaps they can't speak English loudly.

    If you want to know how to swim, you must get into the river. And if you want to be a football player, you must play football.

    So, you see, you can learn English by using (使用) it. You must listen to your teacher in class. You must speak English to your classmates everyday and also you must watch some English cartoons, sing some English songs, write some English diaries.... Then one day you may find you can speak very good English.

如图是人与外界进行气体交换的过程示意图，据图回答以下问题：

（1）气体由外界进出7的过程是通过____ 实现的．

（2）气体进入7时，7处于____ 状态，此时人体处于____ 状态．

（3）6与7之间的气体交换过程称为____ 的气体交换，它是通过____ 实现的．组织内的气体交换发生在图中的____ 之间．

（4）二氧化碳从图中的____ 场所产生，请用图中数字和箭头表示氧气在人体内出现并经过的途径：____．

（5）图中8内的气体同5内血液的气体交换后，结果使血液由____ 变成了____．

下列关于各大洲地势特点的描述，正确的是（  ）

－2⁴×(－2²)×(－2) ³=（    ）