下列付汇需要经过核准后才能支付的是（）。A、对外支付担保费B、外债本息C、转贷款本息

四格表χ²检验，可用于（）。

A.两均数差别的假设检验

B.两中位数比较的假设检验

C.两样本率比较的假设检验

D.样本率与总体率比较的假设检验

E.样本均数与总体均数比较的假设检验

药源性疾病是

A．严重的不良反应

B．停药反应

C．较难恢复的不良反应

D．变态反应

E．特异质反应

An Australian man who has been donating(捐献) his extremely rare kind of blood（血液） for 56 years has saved the lives of more than two million babies.

James Harrison has an antibody（抗体） in his plasma(血浆) that stops babies dying from Rhesus disease, a form of severe anaemia(贫血). He has enabled countless mothers to give birth to healthy babies, including his own daughter, Tracey, who had a healthy son thanks to her father's blood.

Mr. Harrison has been giving blood every few weeks since he was 18 years old and has now racked up a total of 984 donations. When he started donating, his blood was deemed so special that his life was insured（保险） for one million Australian dollars.

He was also nicknamed the “man with the golden arm” or the “man in two million”. He said, “I've never thought about stopping. Never!” He made a pledge to be a donor aged 14 after undergoing major chest surgery in which he needed 13 liters of blood. “I was in hospital for three months,” he said. “The blood I received saved my life so I made a pledge to give blood when I was 18.”

Just after he started donating he was found to have the rare（稀有的） and life-saving antibody in his blood. At the time, thousands of babies in Australia were dying each year of Rhesus disease. Other newborns suffered permanent(永久的) brain damage because of the condition. The disease creates an incompatibility between the mother's blood and her unborn baby's blood. It stems from one having Rh-positive（阳性） blood and the other Rh-negative（阴性）.

His blood has since led to the development of a vaccine called Anti-D. After his blood type was discovered, Mr. Harrison volunteered to undergo a series of tests to help develop the Anti-D vaccine. “They insured me for a million dollars so I knew my wife Barbara would be taken care of,” he said. “I wasn't scared. I was glad to help. I had to sign every form going and basically sign my life away.”

Mr. Harrison is Rh-negative and was given injections of Rh-positive blood. It was found his plasma could treat the condition and since then it has been given to hundreds of thousands of women. It has also been given to babies after they are born to stop them developing the disease.

It is estimated he has helped save 2.2 million babies so far. Mr. Harrison is still donating every few weeks now.

小题1:How old is James Harrison?

A．74

B．70.

C．56

D．78小题2:What does the underlined phrase “two million” refer to?

A．mothers

B．babies

C．dollars

D．blood小题3:Why did James decide to donate his blood? Because _____.

A．his daughter asked him to help her son

B．he has a golden arm worth a million dollars

C．a vaccine called Anti-D is to be developed

D．someone else’s blood saved his life小题4:The sentence “The disease creates an incompatibility between the mother's blood and her unborn baby's blood” (underlined in Paragraph 5) suggests that _____.

A．the mother and the baby have different types of blood

B．babies suffer permanent brain damage before born

C．Rhesus disease contributes to permanent brain damage

D．all the patients have a rare antibody in their blood小题5:What can we infer from the sixth paragraph?

A．His wife Barbara needed to be taken care of badly then.

B．Mr. Harrison was not glad to help develop a new vaccine.

C．Some of the tests to develop the vaccine are dangerous.

D．His blood type was accidentally discovered after tests.

一九九八年五月三十日中午，某市一大学有400多名学生在该校食堂进餐。食谱为鸡蛋炒黄瓜、黄瓜肉丁、西红柿炒鸡蛋、肉烧西葫芦等，主食为米饭、馒头。当日下午17时开始，学生中陆续有100多人到校医看病，主要症状是腹痛、腹泻（一般5～8次），头痛、体温升高多在38℃以上。经调查，发病者中午都在该食堂用餐，中午没有在食堂用餐者，没有发病。

初步被估计为食物中毒引起的暴发，试问判断的依据除外（）

A.病人都有相同的进食史

B.不食者不发病

C.潜伏期短，集中发病

D.病人的临床症状基本相同

E.该病发生于5月份

我国生产的内燃机燃料油的牌号表示常压下，（）时该油品的（）

A.50°C运动粘度厘斯数

B.80°C运动粘度厘斯数

C.50°C雷氏一号粘度

D.80°C雷氏一号粘度