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【单选题】
It has been hypothesized that much of the matter in the universe is 'dark,' i. e. , unseen. Studies have shown that galaxies in many galaxy clusters are moving faster with respect to one another than they would if visible stars constituted all their mass. The studies suggest that the galaxies are moving under the gravitational influence of unseen mass in considerable quantity. Which of the following is an assumption underlying the passage above?A.
Measurements of the speed of moving galaxies are extremely unreliable.
B.
The workings of gravitational forces are not particularly well understood.
C.
The aggregate mass of visible stars in the galaxies mentioned above can be estimated with some confidence.
D.
The general composition of unseen matter in the universe has been determined.
E.
Without exception, the galaxies mentioned above move toward one another.
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【简答题】richtig oder falsch? Hören Sie die folgenden zwei Texte einmal und schreiben Sie: r oder f.
【简答题】限时训练包含哪些环节?各环节的要求是什么?
【单选题】What’s the meaning of the food “dumplings” for Chinese people in the Spring Festival?
A.
Look up.
B.
Help yourself.
C.
Come together.
【单选题】The Spring Festival is a festival ______ Chinese people gather together eating dumplings to celebrate the spring’s coming.
A.
on which
B.
which
C.
during which
D.
that
【简答题】Schreiben Sie für das folgende Diagramm eine Einleitung !
【多选题】Why do Chinese people serve dumplings?
A.
Because dumplings look like ancient silver and gold pieces.
B.
Because people like eating dumplings.
C.
Because dumplings are easy to make.
D.
Because when you are eating them, it's like you are taking in wealth.
【单选题】The three Americans are used to ________ Chinese food, especially dumplings.
A.
eats
B.
eat
C.
eating
D.
to eat
【简答题】Hören Sie den Dialog noch einmal und schreiben Sie r für richtig und f für falsch!
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