题目

 完形填空阅读下面的短文,掌握其大意,然后从短文后各题所给的A、B、C、D四个选项中,选择最佳选项。Look at the 1. It’s my desk. 2 books are on it. One is my English book, and the other (另一本) is my math book. You can also see (也能看见) some 3 on the desk. The plants are green. My pencil case is also 4 the desk. A pen, an eraser and a ruler 5 in it. The pen is black, the 6 is yellow, and the ruler is white. 7 my pencil? Aha, it’s under the desk. Is my computer game under the desk? No, 8 isn’t. The desk has (有) a drawer. 9! It is in the 10. 1若a＞0，b＞0，且函数f（x）=4x3-ax2-2bx+2在x=1处有极值，则ab的最大值等于（ ）A．2B．3C．6D．9