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【判断题】
在旅游目的地系统乃至整个旅游系统中,旅游资源既是旅游发展的基础,又是旅游可持续发展的关键因素。A.
正确
B.
错误
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举一反三
【单选题】Tom described his father, who _______ a brave boy many years ago, as a strong-willed man. [ ]
A.
would be
B.
could be
C.
must be
D.
must have been
【单选题】若需将当前图像的视图比例控制为100%显示，那么可以
A.
双击工具面板中的缩放工具
B.
执行【图像】 →【画布大小】命令
C.
双击工具面板中的抓手工
D.
执行【图像】 →【图像大小】命令
【简答题】用所给动词的适当形式填空。 Tom is a boy of fif. His parents 1______(die) two years ago, and he had to make a living by himself. Now he 2______(work) as a servant at Mr. Jackson's. He works hard and Mr. Jackson...
【单选题】----______has Tom been a doctor ? -----Since two years ago.
A.
How soon
B.
How much
C.
How many
D.
How long
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