下列各式正确的是（）A．（-1）0=1B．用科学记数法表示30700=3.07×105C．用小数表示3×10-6=0.0000003D．（-2）-3=18-数学

更多内容推荐

• Before selecting the curtain for your newly-decorated house，it’s important to know what colors look
• He has impressed his boss considerably and ______ he is soon to be promoted. [ ]A. eventually B. yet
• competence, you are quite suited to the position, but you shouldn’t be careless.A．On account ofB．In
• -We need an immediate reply. –I see . I’ll send the paper to you_____.A．just nowB．sooner or laterC．r
• We got lost in the dark forests. _____, it began to rain. [ ]A. Beside B. Besides C. Expect D. Thoug
• （3×10-5）2÷（3×10-1）-2=______（结果写成科学记数法的形式）．-数学
• Anyone, whether he is an official or a bus driver, should be ______ respected.A．equallyB．especiallyC
• 计算：12-2-1+|2-3|-3sin30°．-数学
• The book was written ______ careful observations and detailed studies.A．on behalf of B．regardless of
• —Are you free after school?—Sorry: I’ve planned to treat a friend of mine to dinner for his help.A．
• Kim Jong un , who attended the 2012 New Year’s concert on Sunday, thanked the performers and spokeof
• To build a harmonious society, we all have a part to play in the fight ____ injustice, unemployment
• Laura wanted to play a joke on her father but gave herself________by laughing.A．outB．awayC．offD．up-高
• 若an•b-n=1（ab≠0），则a、b的关系为______．-数学
• Yesterday I was walking downstairs when I missed my foot and had a bad fall, nothing serious, ______
• 计算2-2的结果是______．-数学
• --- I think he is taking an active part in social work. --- I agree with you _________.A．in a wayB．o
• We are too small to compete _____ a company like that.A．forB．withC．inD．on-高一英语
• It is well-known that humans differ _____ other animals in their ability to speak.A. with B. betwee
• During the dinner, a lady’s critical comments on my new dress really left me _______. After an awkwa
• - How do you like “Tuhao”, Lucy?-- Personally, they are quite well-off______ money rather than IQ.A．
• He was willing to help me ,and expected nothing________ .A．In additionB．In returnC．By chanceD．By tur
• 若3x=127，则x3=______．-数学
• The hurricane did damage to many houses and business buildings.,it caused 20 deaths.A．HoweverB．But C
• –did Prince William's wedding last?– It lasted for about 5 hours.A. How far B. How long C. How
• （1）计算：|-1|+50-2•sin45°+2-1；（2）化简：(2-4x+3)•xx+1．-数学
• 5.Your performance in the driving test didn’t reach the required standard－______,you failed.A．in the
• -----It seems a little ugly to me .-----______, I think it’s rather beautiful.A．In other wordsB．On t
• 若a=-3-2，b=(-13)-2，c=(13)0，则a、b、c的大小关系是（）A．a＜b＜cB．a＜c＜bC．c＜b＜aD．b＜c＜a-数学
• 计算：(2-π)0=______，（-2）-2=______，a2÷a•1a=______．-数学
• The person who was taking photos asked the family to sit ________and listen ________to his order.A．c
• At the initial stages of postwar, _______ maintaining of cooperative relationship with USA and stren
• It is the prevention of disease_____ its successful treatment that has led to the rapid increase of
• 在：4，-20，(-3)-1，|-5|中，结果为正数的个数有（）A．1个B．2个C．3个D．4个-数学
• The latest model of camera can brings the object into focus, with which even a child can shoot very
• Your coat is identical _____mine. No wonder you took it ____mistake.A．to ; forB．as ; byC．as ; forD．t
• 下列说法：①2a-2=12a2；②用小数表示3×10-2为-0.03；③（4x3y2）2=8x6y4；④（x2）n+1÷x2n=x2，其中正确的有（）A．1个B．2个C．3个D．4个-数学
• 计算：（32）-2=______（3.14-π）0=______．-数学
• Our bodies are strengthened by taking exercise. ________，our minds are developed by learning. A．Pro
• Do you think the T-shirt is too tight _____the shoulder?A．atB．onC．toD．across-高一英语
• It seems that living green is _______ easy and affordable. A small step makes a big difference.A．exa
• --- Do you think that the 11th Chinese National Games were a success ? --- Yes, ___! It couldn’t be
• （1）计算：（3.14-π）0-22×34+(-12)-3+|-3|（2）先化简：(x2-2xyy+y)÷x2-y2xy+y2，当x=2时，再从-1＜y＜2的范围内选取一个合适的整数y代入求值．-数学
• __________ the heavy fog, our flight was held up eventually.A．Thanks toB．According toC．Because ofD．
• 计算：（π-3）0+2-1=______．-数学
• 若102a=25，则10-a等于（）A．15B．-15C．150D．1625-数学
• Harry Potter has even become part of the school curriculum, much ____ the pleasure of the schoolchil
• Among customers there are different preferences __________ what is attractive．A．in honor ofB．in plac
• The shooting center is about 50 kilometres ________ the city of Beijing. A. in south ofB. the south
• You’d better book the tickets in advance; _______ we may miss the concert.A．howeverB．thereforeC．neve