对下丘脑的叙述正确的是（）
A.上界是下丘脑沟
B.即下丘
C.为躯体运动中枢
D.漏斗与松果体相连
E.位于背侧丘脑前上方
参考答案：A
The old man used _____ in front of his house and he has got used to _______ like that. [ ]
A. to sit; doing
B. to sitting; do
C. to sit; do
D. to sitting; doing
改变戊糖结构的核苷类似物（）
A.氮杂丝氨酸
B.6-巯基嘌呤
C.氟尿嘧啶
D.甲氨蝶呤
E.阿糖胞苷
