下面開始正文:
1. [比大小] 一個數列,定義為a(n)=5/(2^n). 數值A:第一項至第十五項的和; 數值B: 5。
答案:5比較大。懂了就懂了,不懂也能按計算器。
2. [不定項選擇] 有7個包裹需要被運送. These packages can be put into Box 1, 2 or 3. To be able to ship, each box is required to contain at least two packages. 問下面哪些描述正確。
A. There are exactly three packages in one box.
B. Each box must contain more than 3 packages in one box.
C. There must be a box with odd numbers of packages.
答案:AC。

- 閱讀本文的人還閱讀了: