已知函数y=(k+1)xk2-k-3是反比例函数,则k=______.
由题意得k2-k-3=-1且k+1≠0,
解得:k=2或k=-1;
又k≠-1,
∴k=2.
故答案为:2.
阅读理解。
This is a room. I can see a desk in the room. A chair is behind the desk. What's on the desk? I can see
a box and two books. What's in the box? Sorry,I don't know. I think there is a pen or a pencil in it. What's
that under the chair? It's a ball.
1. Where's the chair?
A. Under the desk
B. Behind the desk
C. In the desk
D. Near the desk
2. What's on the desk?
A. A box
B. Two hooks
C. A pencil
D. A and B
3. What's in the box?
A. Sorry, I don't know
B. There's a ruler
C. There's an eraser
D. There's a pen
4. The ball is _____ .
A. on the chair
B. under the chair
C. hehind the chair
D. on the desk
5. What's in the room?
A. A desk
B. Two books
C. A chair, a ball and a hox
D. A, B and C
阅读下面的文言文,完成文后各题
游媚笔泉记
桐城之西北,连山殆数百里,及县治而迤平。其将平也,两崖忽合,屏矗墉①回,崭横②若不可径。龙溪③曲流,出乎其间。以岁三月上旬,步循溪西入。积雨始霁④,溪上大声漎然⑤。十余里,旁多奇石、蕙草⑥、松、枞、槐、枫、栗、橡,时有鸣巂⑧。溪有深潭,大石出潭中,若马浴起,振鬣⑨宛首而顾其侣。援石而登,俯视溶云,鸟飞若坠。复西循崖可二里,连石若重楼,翼乎临于溪右。或曰宋李公麟⑩之“垂云沜”也;或曰后人求公麟地不可识,被而名之。石罅生大树,荫数十人。前出平土,可布席坐。南有泉,明何文端公⑾摩崖⑿书其上曰:“媚笔之泉”。泉漫石上为圆池,乃引坠溪内。
左丈学冲⒀于池侧方平地为室,未就,要客九人饮于是。日暮半阴,山风卒起,肃振岩壁,榛莽、群泉、矶石交鸣。游者悚焉,遂还。是日,姜坞先生⒁与往,鼐从,使鼐为之记。(选自清·姚鼐《惜爆轩诗文集》)
【注释】
①墉:城墙,高墙。②崭横:形容山崖高峻地横挡在前面。崭:山势高险。③龙溪:溪水名。④霁:雨止天晴。⑤漎(cóng)然:形容流水声响。⑥蕙草:一名熏草,俗称“佩兰”。⑦枞(cōng):树木名,又名“冷杉”。⑧巂(guī):鸟名,即子规,又名杜鹃。⑨鬣(liè):马鬃,即马颈上的长毛。⑩李公麟:舒州舒城(今属安徽)人,字伯时,北宋元佑进士,官至御史检法。精通古文字,擅长画山水佛像。元符末年归居龙眠山庄,所以又号“龙眠山人”。 ⑽沜(pàn):同“泮”,半月形的水池。⑾何文端公:字康侯,名如宠,桐城人。明万历进士。曾入阁辅政,累官礼部尚书,武英殿大学士,卒谥“文端”。 ⑿摩崖:镌刻在山崖石壁上的文字。⒀左丈学冲:丈:古代对长者的尊称。左丈学:左世容,字学冲,乾隆举人,曾任武进县教谕。姚鼐为他的诗文作过序。⒁薑(jiāng)坞先生:姚范,字南菁,号姜坞,姚鼐的伯父。
小题1:解释下列加点的词。
(1)连山殆数百里
(2)步循溪西入
(3)前出平土,可布席坐
小题2:把下面的句子译成现代汉语。
(1)或曰后人求公麟地不可识,被而名之。
(2)游者悚焉,遂还。
小题3:文章最后一段中“游者悚焉,遂还”,这主要是因为________。
小题4:第二段中“鸟飞若坠”中的“坠”字很有表现力,试作简要赏析。