某公司要买100本便笺纸和100支胶棒，附近有两家超市，A超市的便笺纸0.8元一本；胶棒2元一支，且买2送1。B超市的便笺纸1元一本，且买3送1，而胶棒1.5元一支，如果公司采购员要在这两家超市买这些物品，则他至少要花多少元钱（）
A. 183.5
B. 208.5
C. 225
D. 230
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______ is not written by William Butler Yeats.
A. The Lake Isle of Innisfree
B. Sailing to Byzantium
C. When You Are Old
D. Song of Myself
The main idea of this passage is that ______.
A. man's elementary number sense is found in lower species
B. birds have a limited number sense
C. animals cannot count
D. number sense is a primitive form of counting
Karel Drbal found that his model pyramid could ______.
A. sharpen razorblades
B. stop ice melting
C. produce strange noises
D. make animals become torpid
Why does the author mention the Stanford scientists in the second paragraph
A. To compare hard work done by Roslin Institute to that of the two Stanford scientists.
B. To prove that scientific research can make money be the patent.
C. To suggest that why Geron-Roslin is keen to get its patent.
D. To underline that Geron company is money-oriente
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