如何做好羔羊的哺乳和补饲？

右图是某学校实验室从化学试剂商店买回的硫酸试剂标签上的部分内容。据此下列说法正确的是（  ）

A．该试剂的物质的量浓度为9.2 mol/L

B．该硫酸50mL与足量的铜反应生成标准状况下10.3 L SO₂

C．配制250mL、4.6 mol/L的稀硫酸需该硫酸62.5 mL

D．该硫酸与等体积的水混合后所得溶液的质量分数小于49%

PHUKET, Thailand—— Narkis Koral, 23, and Oren Mesika, 24, had no sense of the terrible tsunami that hit Southeast Asia: They were having “a good time ”on the island of Koh Chang in Thailand and only learned of their present situation hours later, through friends who received phone calls from home.

Even though the pair, both from Arad, escaped the tsunami’ s anger, it did not change the fact that their parents were worried  

“Our mothers worried a lot, ”says Koral. “They asked us to leave immediately and return to Israel. They offered to arrange flights, anything we wanted, just return. ”

Dana Kuchansky’ s father is also worried. Kuchansky, 28, and her partner were in Kofun, a small island hit hard by the tsunami. After a night spent on the top of the mountain in the center of the island, the two were taken for free to Bangkok, where they were expected to fly to Israel.

On the telephone, the worried father made sure his daughter received the replacement tickets lost in the tsunami 15 minutes later, he called her again, to remind her of the flight number.

Most of the Israelis visiting Thailand are young and on a limited budget. Their parents are used to having insufficient contact with their children. In most cases, this contact is when the phone call or the use of the Internet is cheap, even if the difference between "expensive" and "cheap" is less than 50 agorot, or cents.

In one case this past week, a mother called the mobile telephone of each of the six embassy（大使馆）staff in Thailand, one after the other. The same duty officer answered all six.

The common reaction of both parents and children, once telephone contact was made, was sobbing with relief that the ordeal（严峻考验）had left them unharmed.

小题1:According to the text, Narkis and Oren________.

A．called their friends to tell them what had happened

B．had great fun even if they knew the tsunami had come

C．knew nothing about the tsunami until their friends rang them up

D．turned out calm in face of the tsunami小题2:Which of the following is NOT true according to the text?

A．Kuchansky and her partner had their tickets missing in the tsunami.

B．All the parents mentioned are worried about their children’ s safety.

C．Most embassy staff were too busy in their work to answer mobile phone calls.

D．The parents of the young Israelis don’ t have enough time to contact their kids.小题3:The underlined word “insufficient” in Paragraph 6 probably means________.

A．unsuitable

B．not enough

C．unnecessary

D．irregular小题4: It can be inferred that ________.

A．50 agorot is too little an amount for the ordinary Israelis

B．as an official in charge, the mother made so many calls

C．the writer may come from Israel rather than from some other country

D．all the young couples traveling in Thailand remained safe and sound

输精管结扎的适宜部位是（）

A.睾丸部

B.精索部

C.腹股沟部

D.盆部

E.附睾部

在焊接领域应用的计算机技术中，（）是人工智能的一个分支，它是一组具有逻辑推理能力的计算机程序。

A.计算机仿真技术

B.模式识别技术

C.专家系统技术

D.数据库技术

彩绘有（）和（）之分。