第21次打卡（12月3日）

1）Many people have been fascinated about ......for centuries because it ......cover.The so cold ......Well,what's under those clouds,what's the surface of......Some question about the surface are still ......but we have learned a lot about it in the past several years.

2)The......called ......volcanos, because beautiful ......resemble......You know,......But what's particularly interesting about these volcanos is that most volcanos here on earth are not......volcanos.Instead,there are other volcano types like......volcanos for example which are a result of ......movement.

3)......has mostly ......volcanos and ......That......case that ......doesn't have moving ......plates.And that's a big diffetence compared to earth .......Moving ......plates are a major geological element,just crucial for the whole cycle......So why does ......have them.Well,there are a few  theories,one of them is that this has to do with the fact that ......has no surface water that needs kind of lubricate the movement of the plates.

4)I'd been doing some researches into what people in Britain think of doctors.The once work in general practice.The first core is for medical care.And comparing with these situation with a couple of other countries,I want to talk about the Russia now behind what I had decided to do.Now,I had said my program of research in three different countries.So I approached post-graduates in my field in the overseas departments,contacting them by e-mail to organize things for me......

5)I had to give up my helpers clear instructions about what kind of sample population I want them to use.I decided that people undet 18 should be excluded.Because most of them are students or looking for their first job.And also I decided this stage just to focus on men who were in employment and set up something for people who didn't have jobs and for employed women later on as a......investigation.