---What ________ useful book it is!

---Yeah, it tells us how to play ________ piano.

A. an, the B. a, / C. a, the D. an, /

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My mother usually much time shopping in the supermarkets on weekends.

A.spends B.costs C.takes D.pays

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A pair of pandas will_________ Denmark(丹麥), and we have a goodbye party for them.

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I’d like the old people some housework.

A. help；do B. to help；doing C. helping；doing D. to help；do

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-Please give Alice the storybook you see her.

-All right.

A.unless B.or C.but D.if

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When a baby cries, its parents will check on it as soon as they can and make sure it is okay. According to a new study, a baby's cry can make adults react very quickly, even if they are not related to the baby.

Oxford University researchers used the classic game whack-a-mole（打地鼠）for the study. Whack-a-hole requires people to hit one of nine buttons（按鈕）. Players must react as quickly as they can to whichever of the buttons that lights up. It is a game that requires speed and accuracy（準(zhǔn)確度）.

The study invited 40 men and women aged 19 to 59. Some of them had sons or daughters, although none of their children were babies. They played whack a-mole after listening to different sounds, including babies crying, the crying of adults in trouble and birdsongs played at a similar pitch（高音）to the babies' cries.

The volunteers' scores were higher after listening to the sound of crying babies. Men and women had similar scores overall. The results showed that hearing a crying baby can trigger a reaction in adults.

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1.According to the story,___________ can make adults react very quickly.

A.birdsongs t B.babies' cries C.babies' laughter D.the crying of adults

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B.There were 59 volunteers who took part in the study.

C.Human brains have developed to take. care of babies.

D.Taking care of babies is the most important thing for adults.

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2.How wide is the“super bus”

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