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【单选题】
This was the first time that he ______ so beautiful scenery.
A.
has seen
B.
had seen
C.
would see
D.
saw
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】The place which _____ the beautiful scenery with the comfortable hot spring baths makes traveler's stay there most enjoyable. [ ]
A.
compares
B.
combines
C.
competes
D.
connects
【单选题】Returning from Guilin, he told me about the scenery ________ interested him there.
A.
where
B.
what
C.
which
D.
who
【单选题】To enjoy the scenery，he would rather _____ long hours on the train ___ travel by air．
A.
spend ; to
B.
to spend; rather than
C.
spend ; than
D.
spending; while
【单选题】______ from the hilltop, the lake scenery is beyond description.
A.
To see
B.
Seeing
C.
Having seen
D.
Seen
【单选题】下列有关DRR描述中不正确的是（）
A.
DRR的空间分辨率较XR高
B.
DRR可随意观察靶区、某一组织或器官、或器官的一部分
C.
T模拟机的前途决定于它的CT图像的质量的提高和扫描时间的缩短。
D.
DRR较易附加射野外的轮廓和等中心位置
E.
CT模拟的前途取决于DRR的图像质量