下列哪种情况不属于机械运动的是（ ）
A．航天飞机在天空运行
B．细胞分裂
C．心脏将血液输送到肌肉
D．竹排顺水漂流
答案：B
Shelly had prepared carefully for her biology examination so that she could be sure of
passing it on her first ____. [ ]
A. attraction
B. attempt
C. arrival
D. article
8个月女孩，近2个月腹泻，有异食癖，因皮肤苍白，厌食来诊。体温正常，心肺未见异常，肝肋下1cm，脾肋下0.5cm，血象：RBC 3.9×1012/L，Hb64g/L，MCV64fl，MCH25pg，WBC 8.0×109/L，血小板250×109/L。预防该患JL的贫血应强调
A．及时添加富含B族维生素辅食
B．牛乳喂养
C．及时添加蛋黄、肉类辅食
D．母乳喂养
E．及时添加水果，蔬菜类辅食
