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【单选题】
已知 a 与 b 均为单位向量，它们的夹角为60°，那么 | a +3 b | =（ ）A.
7
B.
10
C.
13
D.
4
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反馈参考答案：
举一反三
【判断题】教学设计的最终目的是为了有效促进学习者的学习,学习者对教学内容的理解和掌握,以及对学习活动的参与都与自身的特点密切相关,因此,教学活动的设计是否与学习者特征相符合,是决定教学能否成功进行的关键。
A.
正确
B.
错误
【单选题】His doctor suggested he ___ smoke because of his illness.
A.
wouldn’t
B.
didn't
C.
wasn’t
D.
not
【简答题】阅读理解。 One day an Indian went to see his doctor. The doctor looked him over and said, ' Medicine won't help you. You must have a good rest. Go to a quiet place for a month, go to bed early, drink milk,...
【简答题】阅读理解。 A man went to see his doctor one day, because he was suffering from pains in his stomach. After the doctor had examined him carefully, he said to him, 'Well, there's nothing really wrong with yo...
【简答题】One day an Indian went to see his doctor. The doctor looked him over and said, “Medicine won’t help you. You must have a good rest. Go to a quiet country place for a month, go to bed early, drink milk...
【单选题】Which of the following is true about the man and his doctor friend?
A.
He was always convinced by his doctor that he was a happy and healthy man.
B.
The doctor would charge him some money if he went for a visit.
C.
He was thinking of helping the doctor in return as he was a unique case himself.
D.
The doctor could do nothing but feel at the patient ’ s pulse, have a look at his tongue and talk about the weather.
【简答题】Since his blood pressure is much higher than it should be, his doctor insists that he should not smoke.
【单选题】His doctor was clearly a family friend；his wife had only her husband's interests ______heart.
A.
within
B.
at
C.
by
D.
with
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