I have completed the whole Duolingo course. My verdict is that it is really an excellent course (not to forget that it is free) . I can't really have a conversation in German because I still have to plan every sentence in advance (and the Germans speak to fast) My vocabulary is also still too small. I can however read and understand books quite well. I will concentrate on reading and hopefully improve my vocabulary in this way. I would also like to thank all my unknown friends and people like mizinamo from whom I learnt so much on these pages.
Because that's not a possible translation of the German sentence.
Sind sie ...? can only mean "Are they ...?".
Remember that the polite pronoun Sie for "you" is always capitalised -- "Are you in China or Europe?" with the polite pronoun would be Sind Sie in China oder Europa?.
How is China pronounced?
Ask three Germans, get three answers :)
Basically, it depends on where you are from.
As far as I know, the standard pronunciation is [çina], with the [ç] sound of "ich" at the beginning. (That's how I say it. I'm from the north, and I think that pronunciation is pretty much universal here.)
Many native speakers say [kina], though, and many others say [ʃina] (as if spelled Schina).
Similarly with other words that start with Ch- such as Chemie.
If you're interested, have a look at https://qr.ae/TWRsxG ( https://de.quora.com/Wie-sprichst-Du-Ch-am-Wortanfang-aus-Also-in-W%C3%B6rtern-wie-Chemie-China-oder-Chile ) where several German speakers talk about their pronunciations.
(Chile is a special case because there you also have the option [tʃilə] with a Spanish "ch" sound at the beginning.)
ch most commonly makes two sounds in German: [x] and [ç].
In China, it's usally the [ç] sound.
(A bit like the "hy-" sound at the beginning of "huge" or "human" for some English speakers.)
Is it common in German to drop the c from China?
"dropping" is the wrong way of thinking about this.
ch is a digraph: two letters which make one sound. You can't "drop" one; they only make that sound when they're together.
Much like English th does not sound at all like a t or a h.