In isosceles triangle ABC, what is the value of ∠C？

(1) The measure of ∠B is 47°

(2) The measure of ∠A is 90°

What does the author mean by saying "more challenging" in the last paragraph？

The word "omnipotent" in the first sentence of last paragraph means ______.

Nothing is ever accomplished by a committee, ________(除非它包括三个成员),one of whom happens to be sick and another absent.

When Mark Twain became a miner in the frontier region, he started to write.

If you are very busy, how could you get the major information from the newspaper？

You could read the __ and the