可以用于指示饮用水是否受到有机物污染的指标是（）。A.溶解性总固体 B.耗氧量 C.

阅读理解

     When we Americans shop at the grocery stores today,we don't seem to be surprised at the sight of

strawberries in the winter or perfect tomatoes from Holland.In the space of a generation,we've become

accustomed to eating food that's never grown roots in local soil.In fact,most produce (农产品) grown

in the United States travels an average of 1,500 miles before it gets sold.

     Trucking,shipping and flying food from around the country and the globe has a very bad effect on the

environment and on public health.Take grapes for example.Every year,nearly 270 million pounds of

grapes arrive in California,most of them shipped from Chile to the Port of Los Angeles.Their 5,900mile

journey in cargo ships and trucks gives off 7,000 tons of global warming pollution each year,and enough

air pollution to cause dozens of asthma (哮喘) attacks and hundreds of missed school days in California.

     The way we eat has a great influence on the health of the planet.By choosing to eat lower on the food

chain,and focusing on local and organic (有机的) produce,we can reduce global warming and air

pollution,avoid poisonous chemicals,support local farmers and enjoy fresh and tasty food.

     People are rediscovering the benefits of buying local food.How your food is grown,stored,

transported,processed and cooked can all influence how it affects climate and the environment.

Transportationrelated influences are particularly important for imported food.NRDC calculated the

transportation influences of importing fresh produce and wine widely consumed in California.They

directly compared the climate and air quality influenced by importing the food instead of growing and

consuming it in California.Their analysis shows that-all else being equal-locally grown food is a better

choice.

1. From the passage we can learn that most produce sold at the grocery stores in the US________.

A. is grown by local farmers  

B. is from foreign countries

C. comes from far away 

D. is out of season

2. What would be the effect of transportation of food?

A. It pollutes the food during the transportation.

B. It makes the cost of the food much higher.

C. It makes the food less fresh and tasteless.

D. It causes air pollution and global warming.

3. Which of the following may have a bad effect on the health of the planet?

A. Eating higher on the food chain.

B. Eating locally grown food.

C. Eating more organic produce.

D. Eating fresh and tasty food.

4. The main purpose of the passage is________.

A. to help local farmers grow and sell their produce

B. to tell people that imported food is less healthy

C. to warn people of the harmfulness of food transportation

D. to get local people to reject the imported food

患者，女，45岁。小便短数，灼热刺痛。带下黄浊，阴痒异常。舌质红，舌苔薄黄，脉弦数。首选药物是（）

A.车前子

B.泽泻

C.地肤子

D.木通

E.金钱草

用尿糖定性试验筛查糖尿病病人和正常成年人各400人，结果前者有300例阳性，100例阴性，后者有50例阳性，350例阴性。该试验的灵敏度为（）

A.75%

B.25%

C.50%

D.87.5%

E.90%

根据Child-Pugh分级，以下属于C级的是（）

A.血总胆红素35umol/L，少量腹水，血浆白蛋白34g/L，凝血酶原时间延长4秒

B.血总胆红素30umol/L，少量腹水，血浆白蛋白40g/L，凝血酶原时间延长3秒，谷丙转氨酶（赖氏法）35u

C.血总胆红素55umol/L，少量腹水，血浆白蛋白29g/L，凝血酶原时间延长4秒，谷丙转氨酶（赖氏法）230u

D.血总胆红素25umol/L，无腹水，血浆白蛋白42g/L，凝血酶原时间延长2秒，谷丙转氨酶（赖氏法）35u

E.血总胆红素50umol/L，血浆白蛋白33g/L，凝血酶原时间延长5秒，谷丙转氨酶（赖氏法）65u

红红、丹丹、阳阳、珍珍和慧慧是同一家公司的同事，因工作的需要，她们不能同时出席公司举办的新产品发布会。她们的出席情况是：(1)只有红红出席，丹丹、阳阳和珍珍才都出席；(2)红红不能出席；(3)如果丹丹不出席，阳阳也不出席；(4)如果阳阳不出席，慧慧也不出席；(5)已经决定慧慧出席发布会。
根据上述情况，可以推出

A．丹丹出席发布会，阳阳和珍珍不出席发布会
B．珍珍出席发布会，丹丹和阳阳不出席发布会
C．阳阳和珍珍出席发布会，丹丹不出席发布会
D．丹丹和阳阳出席发布会，珍珍不出席发布会