Excuse me, Hero, is C right? WHY？

The answer is C, and I'll analyze it.

a。If the sentence structure is wrong, the correct sentence should be what the difference between sars and birdflu is

b die is an instantaneous verb that does not exist in the present perfect state.

d is correctly interpreted as why our Chinese team be able to beat Korea

So the answer is C

The word order of ad is incorrect, and the declarative sentence order should be used as an object clause here.

C is not right, because this thing can't be found on the Internet, find out generally refers to finding and discovering the truth of the matter, so you can't choose C

Personally, I think C is also correct, and if you have to follow the answer, it may be because:

find out=to discover, as by asking or exploring

Identify, find out, expose. It would be better to follow a specific number.

b I tried to find out how many people died in the Iraq war.

c I'm trying to figure out how to protect our environment (which is a little bit less smooth).

I guess it's not right for me to choose both CA and B, because it's going to be reversed

This d is almost the same if you remove the be at the back

I don't know why, by words.

Right! The equation still holds when the same number is added or subtracted from both sides of the equation at the same time.

a+b=a+c, subtract a on both sides of the equation at the same time, then b=c

And, not just addition and subtraction, multiplication and division still hold: ab=ac, b a=c a (but note that a is not equal to 0).

Right! a+b=a+c, subtract a on both sides of the equation at the same time, then b=c

The equation still holds for adding or subtracting the same number from both sides of the equation.

Have you ever learned about equivalent substitution?

The equation still holds for adding or subtracting the same number from both sides of the equation.

Do you still need to ask? This is the content of elementary school, and it must be scored!

Those who agree with the fourth floor must be scored!

Wrong, if c=0, the situation is wrong.

Incorrect. A intersection (b-c) = (a intersection b) - (a intersection c) correct can be analogous to the distribution rate of multiplication, a intersection (b-c) = (a intersection b)-c error...

Yes, it's c, the reason is that the article before a noun in English is a or an mainly depends on the pronunciation of the first letter of the noun, honest first sound is [o:] so add an, and the last useful first sound is [j], which is a consonant, so use a

the teacher says to tom, “please be __an___honest boy at school now and try to be __a___useful person in the future.”

Usage of an a.

An is used before a vowel sound and is a vowel sound and not a vowel letter, so look at the phonetic alphabet of the first phoneme of the word.

a Used before consonants.

honest[ nist] begins with a vowel useful[ ju:sful] begins with a consonant, j is a semi-vowel, not a full vowel, phonetically an abrasive tone, attributed to a consonant.

h is not pronounced in chonesty, so words that start with vowels are used as an.

The u in useful is pronounced ju: , which is a word that starts with a consonant, so a is used.

Have fun.

Yes, the beginning of the vowel word is preceded by an

The consonant is preceded by an a

Incorrect, it's easy to see by drawing a picture.

1 at 1:30, 2 at 2, 1 at 2:30, 3 at 3, 3 at 3, 3 at 3, 3 at 3, so 1+2+1+3+1=8.