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【简答题】
如图，已知梯形ABCD中，AD ∥ BC，AD=2，BC=4，对角线AC=5，BD=3，试求此梯形的面积．
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反馈参考答案：
举一反三
【单选题】Cost $440 per person (Tourists older than 60 can enjoy a price with 20% off). If you prefer to visit the Great Wall at Mutianyu instead of the Great Wall at Badaling, please pay an extra $20 per perso...
A.
$620
B.
$480
C.
$580
D.
$460
【简答题】The club _________ very professionally. Last month, one of the new machines broke, but it _________ right away. All the machines ________ several times a day, and the pool _________ in great condit...
【简答题】If you can secure the evening of a local in your destination town, you can get quite an amazing tour of the area and see things that tourists may never find. It isn’t that hard to invite a local to be...
【简答题】A lot of__________(tour) visit the Great Wall every year.
【简答题】A 4-day Tour to Hainan Different from other provinces, Hainan is the second largest ocean island and the smallest land province in China. Although scenery in Hainan lacks the grandness (壮观) of the Gre...
【单选题】The tour of our country by the foreign visitors _______ on the Great Wall and other historical spots.
A.
confirmed
B.
focused
C.
instructed
D.
hampered
【判断题】In order to make a fair description of the characteristics of a nation, the author thinks it is important to make a tour to the country first and examine the manners of these people with great care an...
A.
正确
B.
错误
【简答题】等价类划分就是将输入数据按照输入需求划分为若干个子集,这些子集称为 。
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