3. David thinks news reports are________________.
A.a waste of time
B. biased
C. interesting
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4. Which of the following is NOT true?
A. David and Joyce disagree on the role of news reports.
B. David thinks TV has bad effects on children.
C. David thinks if we don’t like the program, we can just switch it off.
下列元素的存在会引起钢材产生热脆现象的有（ ）
A. C
B. O
C. P
D. S
E. N
组成视交叉中央部的纤维
A.双眼颞侧半视网膜发出的纤维
B.双眼鼻侧半视网膜发出的纤维
C.双眼鼻侧半视网膜与双眼颞侧半视网膜发出的纤维
D.左眼颞侧半视网膜与右眼鼻侧半视网膜发出的纤维
E.右眼颞侧半视网膜与左眼鼻侧半视网膜发出的纤维
下颌神经出入颅腔的部位
A.茎乳孔
B.眶下裂
C.圆孔
D.破裂孔
E.卵圆孔
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