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供应肛管的血管发自
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膳食纤维虽然没有营养功能，但却为人体健康所必需，是平衡膳食结构的必需营养素之一。
To the people of the Bijagos archipelago, the shark is sacred. In (1) ceremonies young men from these islands (2) the coast of Guinea-Bissau must spear a shark and present the liver to their (3) But can this ancient ceremony (4) the economic fact that a bowl of shark’s fin soup can cost $150 in the Far EastIn the archipelago, and all along West Africa’s coast, sharks are being "finned" to (5) Fishermen can earn $50-80 (6) a kilo of sharks’ fins. far more than ordinary fish. By the time they (7) the Far East, they could be (8) $500 a kilo or more. valuable (9) aphrodisiacs as well as for gourmets.The high demand is (10) shark populations in West Africa and elsewhere. Most fish, .vulnerable to (11) eaten by bigger fish, protect their species by laying millions of eggs. But the shark has no natural enemy (12) man. and gives birth to just a (13) of young. (14) female sharks are often caught (15) pregnant, the result has been predictably disastrous. Shark-like sawfish, which are also "finned". are already virtually (16) off the Bijagos islands, and guitarfish are (17) threat.In some parts of West Africa, when sharks and other similar fish have been finned, the rest of the flesh is often (18) , salted and exported to places like Ghana, where there is a (19) for lt. Dried shark is used much (20) a stock cube would be elsewhere. But in the Bijagos islands, where traders are uninterested in exporting dried shark, carcasses are often left to rot on the beach. Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.9（）
人体是由细胞组成的，这些细胞靠细胞间质反应互相连接起来。
Linux中一种常用的引导工具是 (8) ；在Linux操作系统下安装网卡，如果操作系统没有内置的驱动程序，那么用户必须 (9) ，才能完成驱动程序的安装；为一块设备名为eth0的网卡分配IP地址和子网掩码的命令是： (10) ；如果不打算使用DNS或者NIS进行地址解析，则必须将所有的主机名都放入文件 (11) 中；测试与IP地址为165.113.1.170的网关是否连通的命令是： (12)
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