All over the earth’s surface is a layer of air which extends upwards for many miles. This air (1) the oxygen without which neither plants nor animals (2) live. Its movements, temperature and pressure (3) the weather, and it is a vehicle (4) the clouds of water vapour (5) condense and fall as rain. It forms a blanket which (6) us from the extreme heat of the sun during the day and (7) the extreme cold when the sun has (8)
It is chiefly (9) air that sound travels, so that if there were no air we should (10) practically nothing. The atmosphere is held (11) the earth’s surface by the gravitational pull of the earth -- that.is, it has weight. High up it is thin (12) near the surface it is compressed by the (13) of air above, and is more dense. The weight of air pressing (14) each square inch of surface at sea-level is nearly (15) pounds, which meansthat the total force (16) the skin of an average man is about 30,000 pounds. He is not , (17) this because the pressure is equal in alldirections and the pressure inside him is equal (18) -that without, but should he go up in a balloon to a height at which the outside- pressure is (19) he would suffer acutely. It is (20) this reason that the cabins of aeroplanes are ’ pressurized’.

A:inside B:into C:of D:on

Niagara is an Indian word which means "roaring water". Indeed, the roar of the falling water of Niagara can be heard (1) a distance of 5 kms. Imagine (2) of water flowing over a cliff 90 feet high and you will get an idea of that terrible noise. And (3) tremendous power the Niagara River has! It moves big rocks about and throws them into the boiling water below. (4) ago an old ship without single person on board was put in mid-stream. It sailed down the river (5) a toy boat with great speed. Having reached the fall, the ship dropped into the boiling water, never (6) again. There were some people who wanted to become famous (7) swimming across the most dangerous part of the Niagara River. One of them was Captain Webb who said that he would try to swim cross the Niagara, which (8) crowds of people. On the evening of July 1^st, 1893, Captain Webb came up to the river and (9) a plunge. His having jumped into the water (10) many people with horror. Soon, he appeared in the middle of the river. A loud shout went up from the crowd, but a moment later there was (11) silence. The man had disappeared under the water. Thousands of eyes (12) on the river, but the man was drowned. In 1902, a certain Miss Taylor decided to go over the falls in a barrel. There were different kinds of pillows inside the barrel to prevent her from (13) . Having examined the barrel carefully, Miss Taylor got in. The barrel was closed and then (14) into the water. Having reached the falls, it overturned and was shot down by the terrible (15) of the water. When the barrel was finally caught and opened, Miss Taylor came out alive (16) with a frightened look in her eyes. Once a crowd of visitors saw a rope (17) over from one bank of the river to the other. Then they saw a man (18) the rope. The man was an actor, Blondin (19) . He managed to cross Niagara Falls on a tight rope. The people on the bank were surprised at his (20) it so well.

A:within B:inside C:at D:on

All over the earth’s surface is a layer of air which extends upwards for many miles. This air (1) the oxygen without which neither plants nor animals (2) live. Its movements, temperature and pressure (3) the weather, and it is a vehicle (4) the clouds of water vapour (5) condense and fall as rain. It forms a blanket which (6) us from the extreme heat of the sun during the day and (7) the extreme cold when the sun has (8)
It is chiefly (9) air that sound travels, so that if there were no air we should (10) practically nothing. The atmosphere is held (11) the earth’s surface by the gravitational pull of the earth -- that.is, it has weight. High up it is thin (12) near the surface it is compressed by the (13) of air above, and is more dense. The weight of air pressing (14) each square inch of surface at sea-level is nearly (15) pounds, which meansthat the total force (16) the skin of an average man is about 30,000 pounds. He is not , (17) this because the pressure is equal in alldirections and the pressure inside him is equal (18) -that without, but should he go up in a balloon to a height at which the outside- pressure is (19) he would suffer acutely. It is (20) this reason that the cabins of aeroplanes are ’ pressurized’.

A:inside B:into C:of D:on

The ideal listener stays both (inside and outside) the music at the moment it is played and (enjoying) it almost (as much as) the composer at the moment he (composes.)

A:inside and outside B:enjoying C:as much as D:composes

Primary memory is stored on chips located (66) . In addition, computers usually use disks as second memory, for example, (67) disks located inside the computer.

A:on the motherboard B:outside C:inside the processor D:on the CPU

[说明] 某企业的网络拓扑结构如下图所示。 图 某企业的网络拓扑结构 防火墙使用安全区域的概念来表示与其相连接的网络。上图中的inside、outside和dmz区域分别对应于Trust区域、Untrust区域和DMZ，不同区域代表了不同的可信度，默认的可信度由高到低的顺序为（）。

A:inside、outside、dmz B:inside、dmz、outside C:outside、dmz、inside D:outside、inside、dmz

阅读以下说明，回答问题1至问题6，将解答填入答题纸对应的解答栏内。 [说明]某企业的网络拓扑结构如图4-1所示。 防火墙使用安全区域的概念来表示与其相连接的网络。图4-1中inside、outside和dmz区域对应Trust区域、Untrust区域和dmz区域，不同区域代表了不同的可信度，默认的可信度由高到低的顺序为（）。

A:inside、outside、dmz B:inside、dmz、outside C:outside、dmz、inside D:outside、inside、dmz

阅读以下说明，回答问题1至问题6，将解答填入答题纸对应的解答栏内。 [说明]某企业的网络拓扑结构如图4-1所示。 防火墙使用安全区域的概念来表示与其相连接的网络。图4-1中inside、outside和dmz区域对应Trust区域、Untrust区域和dmz区域，不同区域代表了不同的可信度，默认的可信度由高到低的顺序为（）。

A:inside、outside、dmz B:inside、dmz、outside C:outside、dmz、inside D:outside、inside、dmz