In the last sentence of the second paragraph, "the higher places on earth" refers to ______.

The reason why all the solar energy falling on the earth can’t be utilized is that ______．

The subject of this passage is ________．

The ratio of the work done by the machine______________the work done on it is called the efficiency of the machine.

Where is the hotel located on the island of Oahu?On ____.

The law on drinking and driving is _____ stated.

_____ most of the earth's surface is covered by water, fresh water is very rare and precious.

The transition of the Earth’s magnetic field is possibly caused by _____.

In astrology, the earth is regarded as the center of the solar system.____

According to the passage, the greatest part of the solar energy that reaches the Earth is _____.

The German court is facing a legal dilemma because the law hasn’t stipulated the punishment of ______.

Have you ever seen the man in the moon?If you look (11)______ at the moon on some nights. you can see the face of the man in the moon. Some people say that they can see an old man (12) ______ sticks. Others say a girl reading. These pictures are made by the mountains and plains of the moon.Long ago people in England used to tell their children that the moon was (13)______ green cheese. Everyone knows that this is not true. The moon is a large round rock. It is completely (14)______ . There are no trees and plants of any kind on the moon. There are no rivers and seas. There are no living things. It never rains on the moon，and everything is covered with (15)______ . white dust. Not even a (16)______ can be heard on the moon.Where the sun (17)______ on it，the moon is very hot. In the dark，however, it is cold (18) ______ ice. The moon is much smaller than the earth. It does not weigh as (19)______ as the earth. If you (20)______ to the moon，you would weigh six times less than you do. Even a fat man would be able to jump high off the ground.(11)