A：①③
B：②④
C：①②
D：③④
2016年4月6日，我国成功将“实践十号”返回式科学实验卫星送入太空。我国是继美国、俄罗斯之外第三个掌握返回式卫星技术的国家，实践十号是我国发射的地25颗返回式卫星。中国在空间技术领域开始跻身于世界先进国家行列的标志是（ ）
下列关于甲型H1N1流感的说法正确的是（ ）
Manners in a dinner party
What to take
You can bring some drinks like ____ juice, beer or something like these.
When to arrive
You should arrive on time or no more than ____minutes late.
If you'll be fifteen late, you should give the host a ____.
What to do at the table
Try to be relaxed and ____ at the table. If you can't use the knife and ____ , you can watch others.
