5.已知双曲线的渐近线为,且过点,则双曲线方程为( )
A. B.
C. D.
4.直线与的夹角为( )
A. B. C. D.
3.下列命题中,真命题是( )
A.若直线平行于平面内的无数条直线,则
B.若直线在平面外,则
C.若直线,直线,则
D.若,,那么直线平行于平面内无数条直线
2.已知过点和的直线与直线平行,则的值为( )
A. B. C. D.
1.双曲线的离心率为( )
A. B. C. D.
假如你是高一学生王刚,通过半年的学习,你对高中的英语教与学有了一定的了解,也有不少问题想和你的英语老师Mrs. Chen探讨和沟通,同时也想给你的英语老师提些建议,所以在放假之前你写一封信给Mrs. Chen。信的内容应包括以下几个方面:
1) 感谢英语老师半年来的辛勤工作;
2) 自己在学习中的几个问题,如单词记不住,语法怎么学等;
3) 给老师的教学建议,如尽可能用英语授课,作业布置适量等;
注意:
1)不要逐条翻译,应适当发挥;
2)字数为120左右; 3)不得使用真实姓名;
Dear Mrs. Chen,
How time flies! I have been your student for nearly half a year. To begin with, I want to _______
▲ ▲ ▲
Best wishes to you and your family!
Yours,
Wang Gang
5. It is certain that the mystery of Tutankhamun’s tomb has never been fully explained.
▲ is certain ▲ that the mystery of Tutankhamun’s tomb has never been fully explained.
4. The students insist on being given free time on weekends, but their parents think differently.
The students insist that they ▲ ▲ free time on weekends, but their parents think differently.
3. Just as we wanted to turn off the lights and go to sleep, there was a sudden knock on the door.
We were ▲ to turn off the lights and go to sleep ▲ there was a sudden knock on the door.
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