The original goal of the project was to collect _____ books.
The original goal of the project was to collect \_\_\_\__ books.
由此
如图1所示，水平桌面上有一木板B，B上有一个物块A，它们在施于B上的水平拉力F的作用下沿着桌面向右做匀速直线运动，由此可见（ ）．图1
如图1所示，水平桌面上有一木板B，B上有一个物块A，它们在施于B上的水平拉力F的作用下沿着桌面向右做匀速直线运动，由此可见（ ）．图1
航空母舰上的飞机跑道长度有限，飞机着舰时，需要一个拦阻装置——弹性钢索，它的弹性拉力使飞机能够很快减速．若飞机的质量为M＝4.0×103kg，着舰时的速度为v＝160m·s－1，在t＝2s内速度减为零，由此可知弹性钢索对飞机的平均拉力F＝____N（飞机与甲板的摩擦力忽略不计）．
航空母舰上的飞机跑道长度有限，飞机着舰时，需要一个拦阻装置——弹性钢索，它的弹性拉力使飞机能够很快减速．若飞机的质量为M＝4.0×103kg，着舰时的速度为v＝160m·s－1，在t＝2s内速度减为零，由此可知弹性钢索对飞机的平均拉力F＝\_\_\_\_N（飞机与甲板的摩擦力忽略不计）．
Which of the following is the first state to raise smoking age to 21?
Which of the following is the first state to raise smoking age to 21?
Dr. Barry was not happy when people talked about her _____.
Dr. Barry was not happy when people talked about her \_\_\_\__.
People use the 311 call system to report _____.
People use the 311 call system to report \_\_\_\__.
Customers: Waiter, a table for two, please.Waiter: Yes, sir. There’s one but it’s close to the door.Customer: _____. We’ll take it.
Customers: Waiter, a table for two, please.Waiter: Yes, sir. There’s one but it’s close to the door.Customer: \_\_\_\__. We’ll take it.
马克思主义哲学区别于其他一切旧哲学的最主要、最显著的特征是（ ）。
马克思主义哲学区别于其他一切旧哲学的最主要、最显著的特征是（ ）。
We can infer from the second paragraph that _____.
We can infer from the second paragraph that \_\_\_\__.