1、B (题目你可能抄的有误,应该如下：)
Li Ping is taller than Wang Hai but shorter than Wu Dong.His seat is__at the back of____ Wang Hai's ___but in front of_____Wu Dong's.
at the back of在...的背后 in front of在...之前
2、B
be made of用...制造而成
3、B
to one's joy使某人高兴的是
4、A
besides除了...还有
except排除在外
but排除在外,常用于nothing/anything but句型
except for常用于句首,不同类型的东西排除在外或除此之外还有的意思