在“测定小灯泡额定功率”的实验中，已知电源电压为6V，小灯泡额定电压为3.8V，灯丝电阻约为8Ω，则电流表（0.6A、3A）应选用的量程为____。电压表（3V、15V）应选用的量程为____。某同学在连接好电路并检查无误后，闭合开关前，要把滑动变阻器的滑片调到____值（变阻器与灯串联）；要测定小灯泡的额定功率，必须使小灯泡两端电压为____V，并测出通过小灯泡的电流值。

孙中山的“三民主义”不包括（    ）

A.popular              B.when             C.at all

D.interests            E.pick up               F.in all

    Do you know what gifts Western kids enjoy best? How do they give them? Let's have a quick look.The most ____gifts are fashionable things like the new video games, CDs and DVDs. A video game costs about US$60 and CDs or DVDs are cheaper at around US$20.Girls like to give jewellery (宝石) they make themselves. They ____pretty beads (串珠) in DIY shops and put them together in their own way.

    US kids give gifts according to their friends' ____. Puzzles or airplane models are good for smart kids.But if you are not sure what others will like, you can give them "gift certificate cards (授权卡)" from a store. They can get whatever they like with the cards. The cards can be worth US$20 or US$30 ____.Usually parents help the kids buy the gifts that they want. So they can make the right decision.

    Before the parties, kids usually wrap the gifts in colourful paper. It's also fine to use newspaper as gift wrap.So ____to open the gifts? In the West, it's usually while everyone is at the party. The receiver (接受者) tries to say something about each gift - like how lovely it is.