某同学做“研究杠杆平衡条件实验”时，把杠杆挂在支架上，杆左端向下倾斜。
（1）若使杠杆在水平位置平衡，需把螺母向________端调节。（填“左”或“右”）
（2）杠杆在水平位置平衡以后，他先在右端支点2 cm处挂3个钩码，那么他应将1个钩码挂在左端离支点________cm处，杠杆才能恢复平衡（钩码相同）。
（1）右 （2）6
在研究杠杆平衡条件时，首先要使杠杆在水平位置平衡，如果左端向下倾斜，应将平衡螺母向右端调节，在右端离支点2 cm处挂3个钩码，经过实验中反复试做，结果应将1个钩码挂在左端6 cm处，杠杆才恢复平衡。
阅读下面短文，从所给A—F六个选项中选出五个正确的选项填空，使短文通顺，内容完整。（共5小题，计10分） Thirty years ago, few Chinese knew about American TV series, though during the 1980s and 1990s, Chinese people got the chance to watch some U.S.A. TV series like Growing Pains.  Now, 小题1:_______,Chinese people have more chances to enjoy foreign TV series. Some American TV series such as 小题2:_______ have become very popular among young Chinese English learners. In their opinion, watching American TV series is a good way to learn English and American culture. They have other reasons to support that point of view. Fist, it’s easy and convenient for learners to manage their learning time. They don’t have to worry about the place and time to learn. 小题3:________,they can start watching and learning. All they need to do is to turn on their computers and put on their earphones. The stories in the TV series also play an important role in attracting more learners. Different cultures between China and the Western countries and exciting story lines get young people interested in watching and learning小题4:________. Besides, watching American TV series can help learners improve their listening and speaking skills. English learners may find it hard to find a native speaker to talk with, 小题5:_______, they can listen to native speakers and follow their conversations as much as they can.
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