伪结
参考答案：
当环内的碱基和环外的碱基形成配对的时候就是一个假结体；RNA结构中最难预测的类型。
根据句意，用所给单词的适当形式填空。
1. Tom is looking forward to _______ (see) the park.
2. Be careful when you go _______ (cross) the street.
3. Which bus I (take) to the post office?
4. Tom fell off the bike and _______ (hurt) his legs.
5. He wants to know if the _______ (follow) answer is right.
职业教育培养目标的两个基本前提：一是是否满足社会发展的需要，二是是否满足受教育者（）发展的需要。
A.利益
B.个体
C.前途
D.经济
