用戶【Mary Hong】點評問題和點評內容

【評論主題】【題組】20. (A) stored (B) killed (C) detected (D) hunted

【評論內容】請問這題的題目是...? 只有看到選項

【評論主題】在平面上,點A(1,-2)到圓 (x+2)^2+(y-2)^2=1上一點的最短距離是多少? (A)0 (B)2 (C)4 (D) 根號17 − 1

【評論內容】從圓的方程式可以得知,這個圓的圓心為 (-2, 2), 半徑為1我是先求 點A和圓心之間的距離,再減掉半徑的長度點A和圓心的距離= [1- (-2) ] ^2+ (-2-2)^2=25 (開根號後變5)5-1=4就是答案囉不知道是否還有更簡單的算法~

【評論主題】8、設ab>0 且a - b>0,則下列何者正確? (A) a > 0 (B)b < 0 (C) a + b > 0 (D)a / b> 0

【評論內容】按題目意思,a和b可能有兩種解1.   a和b皆為正數,例如a=2, b=1       2*10  ,   2-102.  a和b皆為負數,例如a=-1, b=-2     -1*-20   ,   -1-(-2)0選項(A)(B)(C) 兩種情形都有可能,但選項(D) 套用兩種情形都說得通,故選D

【評論主題】12.「躊」躇:

【評論內容】縮寫字

【評論主題】Which of the following sentences is CORRECT?(A) The longer Peter remains the students, the happier h

【評論內容】The longer Peter remains the students, the happier he becomes.Peter只有一個人,用單數就好

【評論主題】48. This study shows that despite having instructors’ provided notes in hand at each lecture, virtua

【評論內容】(A) voluminous   長篇的(B) incandescent    熾熱的(C) recondite       深奧的(D) meddlesome    愛管閒事的

【評論主題】16.(error correction) People rarely recognize the fact that being underweight is as dangerous to hea

【評論內容】題意是要選出句子中不合文法之處錯的是(D)要改成 being underweight is as dangerous to health as being overweight

【評論主題】Student: We all went to see that movie. Teacher: But the sign says that the movie is for adults only

【評論內容】這部電影是給成人以上年紀的人觀賞,你不應該被允許進入觀看。事情已經發生(學生看了電影),所以要用 (D)  shouldn't have been

【評論主題】19.Because of air pollution being greatly reduced, this city is still ________.(A) a good place in w

【評論內容】由於空氣汙染的情形大福的降低,這個城市還是個適宜居住的好地方。