题目内容

Oceanography has been defined the application of all 【S1】
sciences to the study of the sea. Before the nineteenth century,
scientists with an interest in the sea were few or far between, 【S2】
Certainly Newton considered some theoretical aspects of it in his
writings, but he was unwilling to go to sea to farther his work. For 【S3】
most people the sea was remote, and with the except of early 【S4】
intercontinental travelers or others who earned a living from the
sea, there was little reason to ask many questions about it, to let 【S5】
alone ask what lied beneath the surface. The first time that the 【S6】
question "What is at the bottom of the oceans？" had to be
answered with any commercial consequence was the laying of a 【S7】
telegraph cable from Europe to America was proposed. The
engineers had to know the depth profile of the route to estimate
the length of cable that had to be manufactured. It was into Maury
of the US Navy that the Atlantic Telegraph Company turned, in 【S8】
1853, for information on this matter. In the 1840s, Maury had
been responsible for encouraging voyages during which
soundings were taken to investigate the width of the North
Atlantic. Later, some of his findings aroused much popular 【S9】
interests in his book The Physical Geography of the Sea. 【S10】
【S1】

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变量按其取值的连续性可分为_和_两种。

Sporting activities are essentially modified forms of
hunting behavior. Viewing biologically, the modern 【S1】.
footballer is revealed as a member of a disguised hunting
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and his prey into a goal mouth. If his aim is inaccurate and he 【S2】.
scores a goal, enjoys the hunter's triumph of killing his prey. 【S3】.
To understand how this transformation has taken place we
must briefly look up at our ancient ancestors. They spent over a 【S4】.
million year evolving as co-operative hunters. Their very 【S5】.
survival depended on success in the hunting-field. Under this
pressure their whole way of life, even if their bodies, became 【S6】.
radically changed. They became chasers, runners, jumpers,
aimers, throwers and prey-killers. They co operated as skillful 【S7】.
male-group attackers.
Then, about ten thousand years ago, when this immensely 【S8】.
long formative period of hunting for food, they became farmers.
Their improved intelligence, so vital to their old hunting life,
were put to a new use that of penning(把......关在圈中), 【S9】.
controlling and domesticating their prey. The food was there on
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farming were no longer essential for survival. 【S10】.
【S1】

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