甲状腺高功能腺瘤()。
A.血清甲状腺球蛋白升高
B.血清降钙素升高
C.血清甲状旁腺素升高
D.血清垂体促甲状腺激素升高
E.血清T3、T4升高
参考答案:E
双卵双胎约占双胎妊娠的()。
A.50%
B.60%
C.70%
D.80%
E.90%
During a period of “whiteout”,you should expect which of the following?()
A.Snowfall or blowing snow
B.Lack of ability to estimate distance
C.Harsh contrast between sun-illuminated snow cover and the background
D.Hazy horizons with extensive mirage effects