medical researchers

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 126
Joined: Sat Sep 27, 2008 1:53 am
Location: Bangalore, India
Thanked: 1 times

medical researchers

by soumyopriyosaha » Mon Jan 25, 2010 4:05 am
5. Some medical researchers assert that rays of intense radiation originating from solar flares and estimated at three to four times greater than the frequency of visible light damage human skin cells and prolonged exposure can lead to serious burns.
a. at three to four times greater than the frequency of visible light damage
b. as being three to four times greater than the frequency of visible light damages
c. that it is three to four times greater than the frequency of visible light damages
d. to be three to four times greater than the frequency of visible light damage
e. as three to four times greater than the frequency of visible light damage
OA: d
Source: — Sentence Correction |

Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Tue Nov 03, 2009 3:10 am
Location: India

by capri85 » Mon Jan 25, 2010 4:11 am
why is d the answer ? Can someone please explain.

Legendary Member
Posts: 2326
Joined: Mon Jul 28, 2008 3:54 am
Thanked: 173 times
Followed by:2 members
GMAT Score:710

by gmatmachoman » Mon Jan 25, 2010 4:16 am
capri85 wrote:why is d the answer ? Can someone please explain.
"estimated to be" is idiomatic.

• Page 1 of 1