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Although we have tried very hard to achieve the goal, we still ______ great difficulties in our work. 2. I have tried all kinds of ways, but still cannot ______ my daughter to my will. 3. It is natural that babies ______ when they are learning to walk. 4. Last time he failed in the exam, so this time he made a serious ______ to pass it. 5. After so many misfortunes, the mother was not able to stand this heavy ______. 6. He suddenly took a ______ at her face and knocked her down on the ground. 7. I'm afraid that his efforts will be of no ______. 8. They ______ to escape from the prison, but failed.
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【单选题】Why is it not necessary to provide powered flight in space all the time? ______
A.
Few spacecrafts complete their flight operations.
B.
The Earth's gravity cannot be overcome.
C.
No further power is needed after the escape speed is reached.
D.
Free fall takes the place of the Earth's gravity pull.
【简答题】如图所示，是小慧所在学校的平面示意图，小慧可以如何描述她所住的宿舍位置呢？
【简答题】小慧非常喜欢学习化学，请和小慧一起去体会活用化学知识的快乐． （1）小慧放学一进家门就闻到了饭菜的香味，这证实了分子______的性质． （2）小慧经常帮妈妈洗碗，为了很容易地清洗“油乎乎”的菜盘，她向水中加入纯碱，发现水温升高，说明纯碱溶于水______（选填“吸收”或“放出”）热量． （3）小慧家在农村，不少家庭有自己打的水井，如果井水硬度太高，会给生产和生活带来许多危害．小慧同学用所学知识证...
【判断题】in this video, pink is perfect to be combined with poor materials and natural wood elements,bucause it can provide contrast and warmth in the space.
A.
正确
B.
错误
【判断题】In America, motels are usually in the business district; the objective is to provide a resting space for the employees.
A.
正确
B.
错误
【简答题】要把沙子运上三楼，小慧采用了图中的第一种方法，1min完成了任务.若不计摩擦，试求： (1)小慧的功率； (2)小慧运沙子时的机械效率； (3)哪种方法的机械效率最大，为什么？
【简答题】小慧的身高是1.60米．______．（判断对错）
【单选题】小红、小兰、小慧三姐妹，分别住在丰台区、通州区、朝阳区。小红与住在通州的姐妹年龄不一样大，小慧比住在朝阳区的姐妹年龄小，而住在通州的姐妹比小兰年龄大。那么按照年龄从大到小，这三姐妹的排序是( )
A.
小红、小慧、小兰
B.
小红、小兰、小慧
C.
小兰、小慧、小红
D.
小慧、小红、小兰
【简答题】6 Section B Directions: There are 5 incomplete statements here. You should fill in each blank with the proper form of the word given in brackets. Write the word or words in the corresponding space on ...
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