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【多选题】
下列哪些学科领域在关注幸福感?()A.
哲学
B.
经济学
C.
社会学
D.
文化学
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反馈参考答案：
举一反三
【单选题】听力原文：M: When shall we start? F: Now it's 8: 30. We'll start half an hour later. When will they start?
A.
At 8:00.
B.
At 8:30.
C.
At 9:00.
【单选题】若X是二叉中序线索树中一个有左孩子的结点,且X不为根,则X的前驱为( )
A.
X的双亲
B.
X的右子树中最左的结点
C.
X的左子树中最右的结点
D.
X的左子树中最右的叶子结点
【单选题】Mr Brown is an experienced doctor. He is always as cool as a cucumber __________ faced with emergency.
A.
because
B.
before
C.
when
D.
after
【单选题】When we are faced with many options, what should we do?
A.
Keep all the options open.
B.
Make our decisions by drawing lots.
C.
Make our decisions randomly.
D.
Only keep the choices that actually enrich our lives.
【单选题】—How can we protect ourselves _____ the earthquake? —First, we should keep calm when it happens.
A.
with
B.
for
C.
from
D.
about
【单选题】What should we do when faced with a contrastive situation?
A.
Do nothing
B.
Act flexibly
C.
Act blindly
【单选题】若X是二叉中序线索树中一个有左孩子的结点,且X不为根,则x的前驱为( )
A.
X的双亲
B.
X的右子树中最左的结点
C.
X的左子树中最右结点
D.
X的左子树中最右叶结点
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