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【单选题】
以下脚本输出什么? $array = '0123456789ABCDEFG'; $s = ''; for ($i = 1; $i < 50; $i++) { $s .= $array[rand(0,strlen ($array) - 1)]; } echo $s;
A.
50 个随机字符组成的字符串
B.
49 个相同字符组成的字符串,因为没有初始化随机数生成器
C.
49 个随机字符组成的字符串
D.
什么都没有,因为$array 不是数组
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参考答案:
举一反三
【单选题】Christianity has become a worldwide religion since it()almost two thousand years ago.
A.
has begun
B.
had begun
C.
began
D.
begins
【单选题】Since the Iraq war, many an American has come to realize that it is almost impossible for him or her to strike it rich no matter how hard he or she works.
A.
Y
B.
N
C.
NG
【简答题】阅读理解。 Danny was just tired about the way things were going. His mum came to school and talked on and on about Rick Jackson. It seemed that she would never stop talking. 'Somebody's got to stop that bo...
【单选题】【C2】
A.
for
B.
at
C.
in
D.
since
【单选题】Since 1999, the number of foreign students at German universities ______ from 113,000 to almost 200,000. [     ]
A.
has increased
B.
have increased
C.
are increased
D.
was increased
【单选题】He will get everything ready ______ three days.
A.
after
B.
for
C.
in
D.
since
【简答题】III . 完形填空 (10 分 ) 先通读下面短文,掌握其大意,然后从每题所给的四个选项中选出最佳选项。 Bobby was very excited! His family was going on a camping trip! Mum 36 a list of items ( 项目清单 ) that they would need to bring. And Bobby’s 37 was ...
【单选题】My uncle went to Australia last year. We haven't seen him ______. [     ]
A.
since almost a year
B.
from almost a year on
C.
after almost a year
D.
since almost a year ago
【单选题】Almost since the beginning of mankind, governments have been recording the numbers of their populace. The first known census report took place in 3800 B. C. in Babylonia for the purpose of deciding wh...
A.
1085
B.
1200 B.C.
C.
3800 B.C.
D.
1790
【单选题】Since then the population of London________by almost 50,000 a year—an increase largely fuelled by immigration.
A.
has risen
B.
have risen
C.
rises
D.
rise
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