2014年4月托福考试模拟试卷及答案(第四套)_第10页

　　The physical difficulties encountered, how-ever, were quite real. Without a plentiful and

　　convenient supply of some suitable writing medium, any very extended development of the arithmetic process was bound to be hampered. It must be remembered that our common machine-made pulp paper is little more than a hundred years old. The older rag paper was made by hand and so consequently expensive and scarce.

　　The author describes old rag paper as all of the following EXCEPT

　　(A) handmade

　　(B) costly

　　(C) scarce

　　(D) delicate

　　Passage 11.

　　But the most spectacular things about the sea cucumber is the way it defends itself. Its major enemies are fish and crabs, when attacked, it squirts all its internal organs into the water. It also casts off attached structures such as tentacles. The sea cucumber will eviscerate and regenerate itself if it is attacked or even touched; it will do the same if the surrounding water temperature is too high or if the water becomes too polluted.

　　Of all the characteristics of the sea cucumber, which of the following seems to fascinate the author most?

　　(A) What it does when threatened

　　(B) Where it lives

　　(C) How it hides from predators

　　(D) What it eats