单项选择题A.Ann didn t run fast enough to catch the bus. Therefore she missed the class.B.Ann ran very fast but she still missed the class.C.Ann missed the bus and was late for class even though she hurried.D.Ann didn t run so she missed the bus.
单项选择题A.The third finger is the lucky finger.B.The third finger is the middle finger.C.The third finger is supposed to be linked to the heart.D.The third finger is a symbol of lasting affection.
单项选择题A.The man is not satisfied with the speed Miss Jenkins types.B.The man is hesitating whether to accept Miss Jenkins or not.C.The man does not think Miss Jenkins is qualified.D.The man will probably recommend Miss Jenkins to the general manager,
单项选择题A.Mother-to-child transmission.B.Blood transfusions.C.Patient-to-healthcare workers.D.Drug abuser.
单项选择题A.How AIDS spreads to Africa.B.How innocent people contract AIDS.C.What can be done to save innocent victims of AIDS.D.How HIV-positive persons develop AIDS.