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【简答题】
妊娠与哺乳期间食物中缺钙易引起骨质疏松症。()
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皮皮学刷刷变学霸
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【单选题】Man: I have called you several times, but you were not home. What have you been up to? Woman: I have joined a weight-loss support group, and now I feel great to be able to shop in the regular women's ...
A.
To support her family.
B.
To shop in the regular women's department.
C.
To slim down.
D.
To keep herself busy.
【判断题】It has been found to be at least a partial constituent in over 90 per cent of all chemicals known to man.
A.
正确
B.
错误
【多选题】PHP 中,单引号和双引号所包围的字符串有什么区别?( )(选择两项)
A.
单引号速度快，双引号速度慢
B.
双引号速度快，单引号速度慢
C.
两者没有速度差别
D.
双引号解析其中以 $ 开头的变量，而单引号不解析
E.
单引号解析其中 \r \t 等转义字符，而双引号不解析
【判断题】It has been suggested that automation becomes economically viable only when a facility handles at least 50,000 cartons a day.
A.
正确
B.
错误
【简答题】It has been _______ (翻译) into at least 125 languages.
【单选题】It has been at least three years ______ these trees were planted.
A.
that
B.
when
C.
since
D.
as
【多选题】PHP 中,单引号和双引号所包围的字符串有什么区别?( )(选择两项)
A.
单引号速度快，双引号速度慢
B.
双引号速度快，单引号速度慢
C.
双引号解析其中以$开头的变量，而单引号不解析
D.
单引号解析其中\r \t等转义字符，而双引号不解析
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