ミニ英語講座23

and, or, butなど等位接続詞といわれているものは、簡単であるために余り注意が払われないので、繰り返し出題されています。次の文の誤りを正して下さい。

(1)     Charcoal is orderless and tastelessness ….. .

                               A                    B

(2)     …. on the trunk and branch of the tree … .

                       A                  B             C

(3)     The cattle kingdom had a brief but the brilliant existence …. .

                                                A                B

(4)     … are hearing, smell and touching.

                      A                          B

3
Answers to last blog's questions:

(1)   Let υrepresent the rate of the current.  Thus, the information can be organized as shown below.

 

Distance

Time

Rate

up-stream

10   miles

t

18-υ

down-stream

14   miles

t

18+υ

   Then, we can solve the following equation.

            10          14   

           18-υ       18+υ

        180+10υ=1418-14υ

              υ=3

   Therefore, the current flows 3 miles per hour.

(2)   Let χ represent the selling price.  Since she wants to sell each skirt to gain the profit at the 40% of the selling price, we can solve the following equation.

          0.4χ=χ-18

   Therefore, she should sell the skirt at the price of $30.

Ed172_l

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