□28÷4的商是三位数,□里可填______.

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问题:

□28÷4的商是三位数,□里可填______.

考点:认识除法
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为什么针刺治疗要“从阴引阳,从阳引阴”?在临床上如何运用?

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Five-time world overall short-track speed skating champion Yang Yang(A)won China’s first-ever Winter Olympic gold medal with a runaway victory in the 500m final on Saturday.

Yang Yang, putting behind her a dismal fourth place finish in the 1,500 meters three days ago, got off to a sparking lead and never looked back to cross the line in 44.187 seconds.

World-record holder and four-time European champion Evgenia Radanova followed home 0.065 seconds behind.

Another Chinese, Wang Chunju, the world champion in the shortest distance came in third, two-hundredths of a second further behind.

Yang, 25, whose name is tagged with the letter A to distinguish her from her younger teammate and namesake, Yang Yang(S), is the overall World Cup winner this season, with the top points in the 1,000m and 1,500m.

In the 1,500m, the younger Yang, 24, who won two silver medals in Nagano four years ago, crashed out while chasing herd after two South Korean teenagers, KoGi-Hyun and Choi Eun-Kyungm who eventually finished first and second. Yang Yang(A) ended up fourth.

Yang Yang(S) did not compete in the 500 meters.

小题1:How long did Evgenia Radanova take to finish the 500m final?

A.44.252 seconds.

B.44.187 seconds.

C.44.122 seconds.

D.None of the above.小题2:Why did not Yang Yang(S) compete in the 500 meters?

A.She did want to.

B.She was wounded.

C.She was not qualified.

D.It was not mentioned.

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关于污泥厌氧消化的机理和主要影响因素,以下叙述不正确的是()

A.污泥厌氧消化的三阶段可分为水解发酵阶段、产酸阶段和产气阶段

B.污泥的厌氧消化对温度的要求非常高,在±1.5--2℃;

C.中温消化一般不能满足杀灭细菌的卫生要求;

D.消化反应在高温消化与中温消化之间的关系是连续的。

题型:填空题

X染色质

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易腐蚀物品主要有()

A.双氧水

B.黄金饰品

C.高锰酸钾

D.氯酸钾

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