It ________Jack and Mike who often came to help us.

[    ]

A. is   B. was   C. are   D. were

It ________ Jack and Mike who often came to help us.

1. A.
   is
2. B.
   was
3. C.
   are
4. D.
   were

It ________ Jack and Mike who often came to help us.　　　

[　　]

A． is　　　B． was　　　C． are　　　D． were

完形填空（共20小题；每小题1分，满分20分）
阅读下面短文，掌握其大意，然后从41～60各题所给的四个选项（A.B.C和D）中，选出最佳选项，并在答题纸上将该选项标号涂黑。
Jack Baines is a self-made millionaire, but his beginnings were very lowly. He was the youngest of eight children. His father had a  41  in a cotton mill (纱厂), but he was often  42  to work because of poor health. The family couldn’t  43  to pay the rent or bills, and the children often went  44 . After leaving school at the age of 14, Jack was  45  what to do when Mr Walker, his old teacher, offered to lend him ￡100 to start his own 46 .
It was just after the war. Raw materials were not enough, and Jack saw a  47 in scrap metal(废弃金属). He bought bits of metal and stored it in an old garage. When he had built up a large amount, he sold it and  48  plenty of money. Jack  49  working hard. After one year he succeeded in  50  the ￡100.
　　By the time Jack was 30 years old he had  51  his first million, and he wanted to  52  this achievement by doing something “ 53 ”. With all his money it was  54  to build a beautiful home for himself and his parents. In 1959, “Baines Castle” was built in the  55  of the Lancashire countryside. It was one of the finest buildings in the country.
　  Jack has recently sold “Baines Castle” for ￡500 million,  56  Jack still can’t get used to  57  the good life. He can  58  be found drinking with the locals at the local pub（酒吧）.
“I remember being very  59  as a child, but never  60  as a child,” says Jack, “and I will never forget where I came from and who I am.”

任务型阅读(共10小题,每题1分，满分10分)
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。
注意：每个空格填1个单词。
China’s Tianhe-1 has a computing speed of 2,507 trillion（万亿）calculations a second, making it the fastest computer in the world. It is also 40 percent faster than the world’s second fastest supercomputer, Cray XT5 Jaguar, in the US, kept at a national laboratory in Tennessee, according to the New York Times. Jack Dongarra, a University of Tennessee computer scientist, told NYT that the Chinese supercomputer is faster than the existing Number One machine.
Building the fastest supercomputer has become a source of national pride, as these machines are valued for their ability to solve problems in areas like defense, energy and science. These problems are related to national interests. Supercomputing technology is also found in business. Oil and gas companies use supercomputers to find oil and gas.
Obviously, research centers with large supercomputers attract top scientific talents. This adds extra importance to the machines—they’re more than just huge computers.
China’s new supercomputer will be used to speed up greatly scientific calculations, such as hurricane and tsunami modeling, cancer research, car design and even studying stars.
In 2008, two US scientists put together a step-by-step guide on how to build a supercomputer using PlayStation 3 video-game consoles（控制台）. Modern supercomputers are built by combining thousands of small computer servers（服务器）and using software to turn them into one large computer. Really, any organization with enough material and technology can create a fast machine.
The Chinese system follows that model by linking thousands upon thousands of computer servers. But the secret behind the system—and the technological achievement—is China’s own networking technology. “That technology was built by them,” Dongarra said. “They are taking supercomputing very seriously and using a lot of time and money.”
“China is still a developing country,” said Sha Chaoqun, manager at Dawning Company which is the leading supercomputer maker in China. “Maybe one day, China’s total computing power can be greater than that of the US, but there is still a long way to go before we get there.”