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单选题 log2sin +log2cos 的值为 ( )
学科：实习广场课程
时间：2024-12-25 16:45:35
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题目1单选题
log2sin +log2cos 的值为 ( )A. 4B. -4C. -2D. 2
题目2单选题
—Have you finished the poster for the party?—Not yet.I it in two daysA. finishB. finishedC. will finishD. have finished
题目3单选题
有关传统文化常识,下列说法错误的一项是 ( )A. 元宵节又称正月半、上元节、灯节.元宵节习俗有赏花灯、猜灯谜、包饺子、迎厕神等B. 中秋节又称团圆节,农历八月在秋季之中,八月十五又在八月之中,故称中秋.中秋节习俗有赏月、祭月、观潮、吃月饼等C. 有关春天的节气有立春、雨水、惊蛰、春分、清明、谷雨D. 古代术数家拿十二种动物配十二地支,分别是子鼠、丑牛、寅虎、卯兔、辰龙、巳蛇、午马、未羊、申猴、酉鸡、戌狗、亥猪
题目4单选题
According to the sign, if you want to get more information, you should ________.<img src="https://tihai-oss-cloud.itihey.com/img/543c803a5d6920ee6916751d19751a6c.jpg">A. turn leftB. turn rightC. wait here
题目5单选题
已知A(-3,2),B(1,4),P为线段AB的中点,则向量<img src="https://tihai-oss-cloud.itihey.com/img/444bace246e708c641a4f8b5fcd109c1.png">=________. ( )A. (-2,-1)B. (2,1)C. (4,2)D. (-8,-4)
题目6单选题
下列句子中,没有错别字的一项是 ( )A. 火箭呼肃而去、飞船摇曳而落,瑰丽地球和深邃太空之间的一去一回,勾勒出一幕人类探索宇宙的状丽图景B. 父母应尽到首要的监护责任,对青少年多些关心和陪伴,而非任其拿着手机沉缅于网游或直播C. "绿树村边合,青山郭外斜"的乡村风貌,"西塞山前白鹭飞,桃花流水鳜鱼肥"的绿水青山,都是刻写在大地、刻画于人心的优美图景D. 展读一封封家书,其中谈到最多的,就是面对疫情时的"决择"
题目7单选题
抛物线y2=12x的离心率为( )A. 1B. C.D
题目8单选题
When we see this sign, we know that it is made in ________A. AustralianB. AustraliansC. Australia
题目9单选题
We don't know whether todayA. we shall go schoolB. shall we go schoolC. we shall go to schoolD. shall we go to school
题目10单选题
函数y=ax2-2(2a-1)x+3在(1,+∞)上是增函数,则实数a的取值范围是________. ( )A. [0,1]B. (0,1]C. <img src="https://tihai-oss-cloud.itihey.com/img/ca3988446bd34af284e9885a6f16496d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/c22d54d0d7626b0b7718848a356f5544.png">
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