判断字符型变量ch是否为大写英文字母，应使用表达式( )。
A. ch＞='A'& ch＜='Z'
B. ch＜='A'||ch＞='Z'
C. 'A'＜=ch＜='z'
D. ch＞'A' && ch＜='z'
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The meeting of international donor community is held for______ days.
A. 2
B. 3
C. 4
D. 5
Japan's aid will be donated through a fund set up by______.
A. the WTO
B. the World Bank
C. the UN
D. the World Bank and the UN
What has been indicated by this incident
A. South Africa is a non-racial democracy.
B. Racism is still a problem in South Africa.
C. Police in South Africa react quickly to any criminal acts.
D. South Africa is still a dangerous plac
What is the "shadow land of hope" in the writer' s point of view
A. The wonderful one often dreams about.
B. The bright future that one is looking forward to.
C. The state of uncertainty before one' s final goal is reached.
D. A world that exists only in one' s imagination.
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