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Scientists around the world are working hard to find out effective ways to detect(探测) cancer in the early stage, and a Chinese scientist may have found a quick way of knowing whether malignant(恶性的) tumors exist in a patient's body, with just one drop of blood.

Luo Yongzhang and his team in Tsinghua University's School of Life Sciences in Beijing have successfully invented a test kit of HSP90α for clinical(临床的) use, which can detect several kinds of cancer by studying a drop of human blood.

Malignant tumors in early stages can be cured but once they have spread all over the patient's body, there is no way to save the person's life. However, it's very difficult to detect cancer in its early stages, as patients don't show easily seen symptoms(症状), so to detect cancer early remains a global challenge for scientists.

Back in 1989, scientists found a kind of heat shock proteins (HSP), named HSP90α, which existed in human bodies and could be used as a cancer detecting kit. Scientists around the globe have been working on it since then, and more than 10,000 journals have been published on magazines, yet no one has actually turned their research results into medical products.

However, Luo and his team have been working out the problem since 2009. The team has produced an man-made HSP90α protein and they are able to create the protein, in any quantity, and at any time they wish to. Now, the kit has been certified to enter the Chinese and European markets.

1.What is the kit used for?

A For giving blood.

B For curing cancer.

C For detecting cancer.

D For producing blood.

解析：选C。细节理解题。根据第二段Luo Yongzhang and his team in Tsinghua University's School of Life Sciences in Beijing have successfully invented a test kit of HSP90α for clinical use, which can detect several kinds of cancer by studying a drop of human blood.可知这一试剂是用于检测癌症的，故选C。

2.Why is it difficult to detect cancer in the early stage?

A Because cancer at that stage could be cured.

B Because malignant tumors at that stage haven’t spread.

C Because there is no easily seen symptoms at that time.

D Because it is still a great challenge for scientist all over the world.

解析：选C。细节理解题。根据第三段最后一句However, it's very difficult to detect cancer in its early stages, as patients don't show easily seen symptoms, so to detect cancer early remains a global challenge for scientists.可知癌症在早期难以发现是因为那时候没有明显症状，故选C。

3.When was HSP90α found?

A In 1989.

B In 1999.

C In 2009.

D In 2017.

解析：选A。细节理解题。根据第四段第一句Back in 1989, scientists found a kind of heat shock proteins (HSP), named HSP90α...可知HSP90α热休克蛋白是1989年发现的，故选A。

4.How long does it take Luo Yongzhang and his team to work out the problem?

A 2 years.

B 8 years.

C 18 years.

D 28 years.

解析：选B。数字计算题。根据第五段第一句However, Luo and his team have been working out the problem since 2009.可知罗永章团队是2009年开始研究热休克蛋白的临床试验的，现在是2017年，因此用了8年时间，故选B。

5.Where can’t you see the kit some time later?

A In German.

B In China.

C In France.

D In America.

解析：选D。推理判断题。根据最后一段Now, the kit has been certified to enter the Chinese and European markets.可知这一应用已经获得了中国和欧盟认证，因此在欧盟国家和中国可以看到，在美国看不到，故选D。