北京人主要使用的生产工具是( )
A:天然的石块
B:磨制的石器
C:打制的石器
D:粗糙的陶器
当0<a<1时,不等式loga(4﹣x)>﹣log1ax的解集是( )
清朝前期为了巩固统一的多民族国家,做了哪些努力?
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A. The car is on the box.
B. Look, the bus is in my bag.
C. —Mom, where is my ball?
—Look, It's under the chair.
D. —Excuse me, Amy. Can I use your pencil?
—No problem.
E. Where are my pants?