问题 不定项选择题

如图所示,向甲和乙两容器中都充入2 mol X和2 mol Y(K关闭),起始V=0.8a L,V= aL,在相同恒定温度下,两容器中各自发生下列反应:X(g)+Y(g)2Z(g)+W(g),达到平衡时,V=0.9aL,则下列说法错误的是

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A.两容器中达到平衡的时间:甲<乙

B.甲容器中X的转化率为25%,且比乙容器中X的转化率小

C.打开K达到新平衡时,甲容器的体积为0. 8aL(连通管中气体体积不计)

D.打开K达到新平衡后,升高乙容器温度,甲容器体积一定增大

答案

答案:D

阅读理解

You may know your mother, but how well do you really know Mother’s Day? Cards, flowers, sales, TV specials, and a day off for someone who really deserves it ---- those are what probably come to mind for many people when they think of Mother’s Day. But there’s more to the story.

The earliest Mother’s Day celebrations were held during spring in ancient Greece. The celebrations honored Rhea, the Mother of the gods. During the 1600’s, England celebrated a day called Mothering Sunday. On this day even servants were given the day off to spend with their families. A mothering cake was even served with the family meal.

In the US, Mother’s Day began in 1872 when Julia Ward Howe, who wrote the words to the famous song The Battle Hymn of the Republic, suggested it as a day devoted to peace. But it didn’t really become popular until 1907 when Anna Jarvis stared a campaign to honor mothers. She believed that mothers could help people get over the pain they experienced during the Civil

War. The US isn’t alone in devoting a day to mothers. Many other countries including Denmark, Finland, Italy, Turkey, Australia, Japan, and Belgium also honor their mothers in May. Other countries honor their mothers at different times of the year.

Learning more about Mother’s Day and celebrating Mother’s Day are important, but probably not as important as understanding what your own mother, or grandmother, or aunt has really done for you. And that will certainly be appreciated more than one day in a year.

小题1:What is the passage mainly about?

A.The reason why people celebrate Mother’s Day.

B.The ways people honor mothers.

C.The history of Mother’s Day.

D.The great contribution of mothers.小题2:Where was the earliest Mother’s Day celebrated?

A.In ancient Greece.

B.In the US.

C.In England.

D.In Italy.小题3:We can learn from the passage that _____.

A.Rhea is the mother of a king in ancient Greece

B.not all the countries celebrate Mother’s Day in May

C.only mothers were given a day off on Mothering Sunday

D.it was in 1872 that Mother’s Day really came into being小题4:The last paragraph tells us that _____.

A.all the people should celebrate Mother’s Day

B.only mothers are honored on Mother’s Day

C.understanding mothers’ work is more important than just celebrating Mother’s Day

D.people should celebrate Mother’s Day every day

多项选择题