在土壤的固相物质中，矿物质可占（）
A.60%以上
B.70%以上
C.80%以上
D.90%以上
参考答案：D
Whenever she sees the ______ of bloody fighting on the screen, she will cover her eyes with her hands, ______at them.
A．sights; not daring to look
B．scenes; daring not to look
C．views; dared not look
D．scenes; not daring to look
图书馆里有科技书和文艺书共2400本，已知科技书和文艺书的比是5：3，这个图书馆有科技书和文艺书各多少本？
