为什么钢笔有水却写不出来

It is obvious that 结构的用法主句,从句的时态如何搭配? 是用 it is obvious that 还是用 obviously为什么呢 0.3dm3=()cm3 1.05m3=()dm3 4600dm3=()m3 3500cm3=()dm3 8.09dm3=()L=()mL 438mL= ()cm3=()dm3 在括号里填分数 0.5m3=（）dm 2.54ml=（）L 590cm3=（）dm3 60ml=（）L 8dm3=（）m3 21L=（）ml=（）cm3 We find ______ necessary to protect the earth.A.it B.this C.that D.what请各位大侠说明原因,为什么? We find ___ necessary to protect the earth.A.it B.this C.that D.what 为什么用it 不用that呢 we found it necessary to protect the earth 为什么用it 而不是it is We found [ ] necessay to protect the environment.A it B this C that D what The scientists found__________ important to protest the environment A.that B.this C.it D.what 学linux man find 后几句英语看不懂,求大神解these options controls the behavior of find bur are specified immediately after the last path name 额.就是这句话.总感觉自己翻译出来怪怪的.求大神翻译 She found _____necessary to speak more English iShe found _____necessary to speak more English in chass.A.this B.that C.it D.what 为什么选it,别的选项为什么不可以 求英语大神翻译:Consumers expect to find the brand available at a discount and are unpleasantly surprised to find a higher price.（最好能真的读懂这句话.） 5千克的糖,平均分装成7袋,每袋糖是这些糖的(),每袋糖重()千克? 填空；0.35L=[ ]cm3 440ml=【 】cm3 2.3dm3=( )dm3=( )cm3 1,把20千克食盐放入180千克水中,溶成盐水,求盐水的浓度.1、把20千克食盐放入180千克水中,溶成盐水,求盐水的浓度.2、把5克碘溶解在195克酒精中,配成碘酒,求这种碘酒的浓度.3、把4克碘溶解在 比20米少1/2米是（ ）米 15米比（ ）米多1/2 判断：在50千克水中加盐10千克,这时盐水的含盐率为20%. 比15米多3分之1米是多少米? 一根绳子,第一次用去了它的一半多1米,第二次用了剩下的三分之一少1米,剩下15米.求着条绳子的总长? 5．在273K时,将相同初压的4.0 dm3 N2和1.0 dm3 O2压缩到一个容积为2.0 dm3的真空容器中,混合气体的总压为3.26×105 Pa.求：（1） 两种气体的初压.（2）混合气体中各组分气体的分压.（3）各气体的物 the museum is____interesting____we want to visit it again A as;as B so;that C too;as D very;that How did you find your visit to the museum?怎么翻译? The book was so interesting that she found herself____ itA.being absorbed in B.absorbed by C.absorbed in D.being absorbed bybe absorbed in沉迷于.选C不选A是什么原因啊? ——we plan to visit the museum next week ——__________ A:sound interesting B:sounds interesting这个问题很纠结~~有人说选A是因为A是祈使句,用动词原形.有人说选B是因为答句省略了it~~~ we all find-- to play basketballA that interested B this interesting C it interestingD it'sinteresting的答案 把一条3米长的绳子平均分成5段,每段是这条绳子的（）,每段长（）米 1/25m3=( )dm3,3/4m2=( )dm2,5/8吨=（ ）千克,2/3时=（ ）分括号里填分数 这个女人很像芭比娃娃, 五米比几米短一米? 100米比几米少五分之一 把3米长的绳子,平均分成5段,每段长（）米；每段长是1米的（）；每段长是3米的（）.