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这是一个很著名的故事：阿基米德与国王下棋，国王输了，国阿基米德要什么奖赏？阿基米德对国王说：“我只要在棋盘上第一格放一粒米，第二格放二粒，第三格放四粒，第四格放十六粒…按这个方法放满整个棋盘就行．”国王以为要不了多少粮食，就随口答应了，结果国王输了． （1）我们知道，国际象棋共有64个格子，则在第64格中应放多少米？（用幂表示） （2）请探究第（1）中的数的末位数字是多少？（简要写出探究过程．） （3）你知道国王输给了阿基米德多少粒米吗？为解决这个问题，我们先来看下面的解题过程：用分数表示无限循环小数： ． 解：设 ①．等式两边同时乘以10，得10x= ②． 将②﹣①得：9x=2， 则 ． ∴ 请参照以上解法求出国王输给阿基米德的米粒数（用幂的形式表示）
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【单选题】-Your sweater looks very nice. What’s it made__________? -Wool, and it’s made__________ Guiyang. [ ]
A.
from, on
B.
of, in
C.
of, on
D.
from, in
【单选题】听力原文：W: The product is very light. What's it made of? M: It's made of plastic. But it's very strong. Q: What can we learn about the product? (4)
A.
It is heavy.
B.
It is soft.
C.
It is made of plastic.
D.
It is strong and heavy.
【单选题】— What is your scarf made ______? — Silk, and it’s made ______ Hangzhou.
A.
in, of
B.
of, by
C.
of, in
D.
by, in
【单选题】There is today's newspaper.
A.
nothing new in
B.
something new on
C.
important something in
D.
nothing important on
【单选题】Is there ( ) in today's newspaper?
A.
exciting anything
B.
anything excited
C.
excited anything
D.
anything exciting
【简答题】标准正态分布的均值为1，标准差为0。（ ）
【单选题】What is it made of?
A.
It's made of metal and glass.
B.
It's made of metal and wood.
C.
It's made of paper, not metal.
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