【简答题】一个三角形中至少有( )个锐角,最多只有( )个直角或钝角。
【单选题】Why does the speaker say this: "I will explain how researchers set up their experiment, what its results were, and what those results can help us conclude about chimpanzees and ourselves"?
A.
to introduce a surprising conclusion
B.
to help listeners understand how she will organize the lecture
C.
to explain that she will discuss facts rather than opinions
D.
to emphasize the behavioral similarities between chimpanzees and humans
【简答题】任意一个三角形中至少有( )个锐角。三角形的内角和是( )度。
【单选题】After the MRI exam doctor can help the patient to test results.
【单选题】The results can help you stay ___ and alert your doctor to the signs of a medical problem.