句型转换。

1. We had a lot of things to do that day.(改为同义句)

    _________ _________ a lot of things we could _________ that day.

2. Joe gave me a call just now.(改为一般疑问句)

    _________ Joe _________ _________ a call just now?

3. She invited only me to her birthday party.(改为同义句)

    She didn't invite _________ _________ to her birthday party _________ me.

4. Sorry, I don't know what I can do next. (改为同义句)

   Sorry, I don't know _________ _________ _________ next.

5. My friend Tim lost his new sports shoes. (改为否定句)

   My friend Tim _________ _________ his new sports shoes.

2010年11月11日，“雪龙号”从深圳出发前往南极进行第27 次科学考察任务，此次科学考察任务，此次南极考察的一项重要工作就是昆仑站（80°25′01″S，77°06′58″E）续建。读下图，完成下列问题。

（2）去南极科学考察的时间，一般选在每年的11月到次年3月，试解释其中的原因。

________________________________________________________________________________

（3）距离南极洲最近的大洲是_______，所以有些考察队选择从此进入南极洲。

（4）建站时，需要克服气候严寒等困难，形成南极洲气候严寒的主要因素是_______因素和地形因素等。