It is in Steven Spielberg’s first film , Jaws ,_____a big white shark attacks swimmers ____are spending their holidays in a small village by the sea. .

A．where, who

B．which, that

C．that, that

D．where, that

新药Ⅱ期临床试验的病例数为

A．100例

B．300例

C．20～30例

D．200例

E．30例