题目内容
7．My teacher warned us ________ in the streets．（ ）| A． | not to play | B． | don't play | C． | to not play | D． | to not play |
分析 我的老师警告我们不能在街道上玩耍．
解答 答案：A．warn sb not to do sth 警告某人不做某事，故答案是A．
点评 warn sb of sth 告诫某人某事
warn sb （not ） to do sth 告诫某人（别） 做什么
warn sb against doing sth 告诫某人别做什么
warn sb against sb/sth 告诫某人提防某人，某物
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| 19．A．common | B．careful | C．extra | D．enough |
| 20．A．name | B．art | C．extra | D．aim |
| 21．A．because | B．how | C．when | D．unless |
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1．
"DRINK your milk．It's good for you!"You've probably heard that many times，and it's true．Milk contains calcium （钙），which is necessary for keeping bones and teeth healthy and strong．The US government even （80）A milk as part of the National School Lunch Program，saying that students should drink one cup of fat-free or low-fat milk every meal．
However，a group of doctors asked the government to take it away from the lunch program．The US‘Physician Committee for Responsible Medicine （PCRM）'says，"Milk is high in sugar，fat and animal protein，"all of which are not so （81）C to health．There are better ways to get calcium，such as eating beans and drinking orange juice and soymilk．"One of the only （82）D people prefer milk is because it is going to help build strong bones，"says Dr Neal Barnard，president of the PCRM．But milk may not be the best way to get calcium your body needs．
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Of course，calcium is important for healthy bones and teeth，but there are other things that have （83）B to do with your bone strength，such as genes （基因），how much vitamin D you take in，and time，getting an hour's exercise every day．
Some people disagree with the idea that milk isn't important．Keri Gans，an American Dietitian （营养学家．，says"I don't think it's （84）A if we take away this drink from the lunch line．Children enjoy it very much，especially among those who are unable to meet their nutrient （营养的．needs for the day．"
The US government is now considering PCRM's idea，but （85）B may be a long way off．A professor at New York University puts it best："Milk certainly has nutrients．Other food has the same nutrients．It's just food．As with other food，too much might be a problem．"
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