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【单选题】
当代中国最鲜明的特色是A.
科学发展
B.
绿色环保
C.
改革开放
D.
自主创新
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】What is the techniques to appraise uncertainty?
A.
Market research
B.
Pay-off matrix
C.
Decision rules
D.
Focus groups
【简答题】土的颗粒密度和土粒比重从数值上讲二者是()的。
【单选题】There’s still much uncertainty about what it is like to study online. In the sentence, “uncertainty” means:
A.
suspect
B.
guess
C.
doubt
D.
worry
【单选题】Passage 2--- 4. What is the speaker’s attitude toward uncertainty and settling down?
A.
It is better to settle down later.
B.
It is better to settle down earlier.
C.
It is necessary to try every means to avoid uncertainty.
D.
It is not necessary for people to avoid uncertainty.
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