某同学在学习家庭用电知识时：

（l）他设计了A、B、C、D四组有关插座、螺口灯泡、开关的家庭电路如图甲所示，其中连线正确的一组是____ ．

（2）天气渐冷，该同学家中购置了一台金属外壳取暖机，为用电安全，接入家庭电路时，应选用图乙中____ （选填“E”或“F”）插座，它能保证取暖机金属外壳与____ 相连．

（3）图丙中G、H是使用测电笔检测的两种握笔方法示意图，其中正确的是____ ．

（4）该同学家电能表的表盘如图丁所示，其读数是____ kW•h．若电能表的表盘转了300转，则该同学家的用电器总共消耗了____ J的电能．

    We are students from Thailand,and we decide____(save) elephants. The elephant is one of Thailand's____(symbol). Our first flag had a white elephant____it. This is a symbol of luck. Elephants are smart animals. It is easy for them to play soccer____music. They can also draw very____(good). In addition, they are strong enough to carry a lot of things for people. People say that an elephant never____(forget). They can walk for a long time and never get____(lose). They can also remember places with food and water. This helps them to live. But now elephants are in great____(dangerous). People cut down many trees, so elephants are losing their homes. People also kill____(they) for their ivory.Today there are only about 3,000 elephants. It is necessary for us to try our best to save the trees and not to buy things that____(make) of ivory. It is important to remember that March 13th is Thai Elephant Day.

下图为美国阿拉斯加地区简图。图中南北方向连接油田的线是阿拉斯加输油管道，这是世界上第一条深入北极圈的输油管道。有近一半的输油管道架空修建并采用泡沫塑料保温，有比较完善的抗地震措施，在平坦地带也采用“之”字形铺设。读图回答下列小题