听力原文: When my interest shifted from space to the sea, I never expected it would cause such confusion among my friends, yet I can understand their feelings (32) . As I have been writing and talking about space flight for the best part of 20 years, a sudden switch of interest to the depth of the sea does seem peculiar. To explain, I'd like to share my reasons behind this unusual change of mind (35) . The first excuse I give is on economic one. Underwater exploration is so much cheaper than space flight (33) . The first round-trip ticket to the moon is going to cost at least 10 billion dollars if you include research and development. By the end of this century, the cost will be down to a few million. on the other hand, the diving suit and a set of basic tools needed for skin-diving can be bought for 20 dollars. My second argument is more philosophical. The ocean, surprisingly enough, has many things in common with space. In theft different ways, both sea and space are equally hostile. If we wish to survive in either for any length of time, we need to have mechanical aids (34) . The diving suit helped the design of the space suit. The feelings and the emotions of a man beneath the sea will be much like those of a man beyond the atmosphere.
(33)
A.They wanted to follow his example.
B.They full supported his undertaking.
C.They were puzzled by his decision.
D.They were afraid he wasn't full prepared.
第3题
通常所说的一个完整的计算机系统应包括()
A.主机、键盘和显示器
B.计算机及其外部设备
C.硬件系统和软件系统
D.系统硬件和系统软件
第4题
通常所说的一个完整的计算机系统应包括()
A.主机、键盘和显示器
B.计算机及其外部设备
C.硬件系统和软件系统
D.系统硬件和系统软件
第6题
下列选项中________不是计算机的基本输入输出设备。
A.键盘
B.鼠标
C.显示器
D.主板
第7题
微型机必备的外部设备是()
A.键盘、鼠标
B.显示器、键盘
C.键盘、打印机
D.显示器、鼠标
第9题
A.S,S#=SC.S AND SEX="女"AND CNAME="计算机"
B.S,S#=S C.S# AND C.C#=S C.C# AND CNAME="计算机"
C.SEX="女"AND CNAME="计算机"
D.S.S#=S C.S# AND C.C#=S C.C# AND SEX="女"AND CNAME="计算机"
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