计算：(-3)×2×[-23+59]÷(-2)．

牙龈结缔组中可见大量幼稚的白细胞，应考虑为（）

A.急性坏死性溃疡性龈炎

B.遗传性牙龈纤维瘤病

C.维生素C缺乏性龈炎

D.炎症水肿型慢性龈炎

E.白血病性龈增大

静态作业的特点是（）

A.能量消耗水平高

B.能量消耗水平不高

C.能量消耗水平因人而异

D.能量消耗水平不高，不易疲劳

E.能量消耗水平不高，易疲劳

Because Turandot is drunk ____ power, she ______ try and _____ her father, who has promised to allow her to choose her own husband.

A．with ; dare to ; exercise control over

B．with; dares to ; exercises control over

C．by ; dare ; exercises control over

D．in ; dares to ; exercise control over

孕妇在妊娠早期感染何种病毒最易致胎儿畸形（）.

A.麻疹病毒

B.风疹病毒

C.柯萨奇病毒

D.埃可病毒

E.腺病毒