問題詳情
19. 設 a 為正整數，若 
也是正整數，則所有可能的 a 之和為多少？
(A) 178
(B) 187
(C) 198
(D) 209
也是正整數，則所有可能的 a 之和為多少？ (A) 178
(B) 187
(C) 198
(D) 209
參考答案
答案：C
難度：適中0.471698
統計：A(2),B(7),C(25),D(4),E(0)
內容推薦
- (A) afraid (B) sure (C) informed (D) reminded
- 30．The form cannot be signed by anyone yourself.(A)rather than (B)other than (C)more than (D)better
- (A) discovered (B) encouraged (C) persuaded (D) supposed
- If we _______ now to protect the environment, we'll live to regret it.(A) hadn't acted
- 37．(A)otherwise (B)therefore (C)however (D)besides
- The author considers his fifty years of life(A) peaceful (B)ordinary (C) satisfactory (D) re
- (A)necessarily (B)normally (C)basically (D)certainly
- (A)apologized (B)cried (C)complained (D)laughed
- D In meditation(冥想)，people sit quietly and focus their attention on their breath .As they breathe i
- h is by no means clear the president can do to end the strike.(A) how (B) which(C) that (D) what
內容推薦
- (A)drive (B)walk (C)follow (D)march
- (A)meets with (B)brings up (C)works out (D)thinks about
- (A) enjoyment (B) satisfaction (C) disappointment(D) imagination
- In the experiment ,volunteers doing meditation for longer hours (A) were more likely to cat
- 43．(A)decision (B)fortune (C)business (D)plan
- 42．(A)realized (B)reminded (C)learnt (D)dreamt
- This passage is mainly about ________.(A) traveling in space(B) the ways of living in space
- This restaurant wasn't_ that other restaurant we went to.(A) half as good as (B) as half go
- (A)address (B)signs (C)notices (D)guidance
- C Mail carriers will be delivering some good news and some bad news this week. The bad news: Sta
- The study proves that(A) meditation improves one’s health(B) brain activity can be recorded(
- (A)Thankfully (B)Hopefully (C) Unfortunately (D)Strangely
- Police have found _______ appears to be the lost ancient statue.(A) which (B) where (C) how (D)
- E When we think of leadership ,we often think of strength and power .But what are these really ,an
- ---- We’re organizing a party next Saturday, and I’d like you to come.---- _______! I have anothe
- (A)or (B)for (C)so (D)but
- ______ the project in time, the staff were working at weekends.(A) Competing (B) Having completed
- 38．(A)parking lot (B)bus stop (C)school (D)market
- (A)happened (B)seemed (C)continued (D)aimed
- If a person suffers from OCD, be is likely to keep doing any of the following EXCEPT . (A)ch
- By saying “It could be your great-grandchildren’s stamp”, Mr. Saunders means that forever st
- (A) appear (B) do (C) work (D) behave
- I _use a clock to wake me up because at six o'clock each morning the train comes by my hous
- The party will be held in the garden, weather . (A) permitting (B) to permit (C) permitted (D) p
- When I first met Bryan I didn't like him, but I _______ my mind.(A) have changed (B) change