Please solve the problem in the English subject the problem solve the answers

However, the given pattern __M_S_R has 7 blanks, implying a 7-letter word.

If we use SEMESTR (a common informal or abbreviated form of semester), it fits the pattern:
S E M E S T R
The 3rd letter is M.
The 5th letter is S.
The 7th letter is R.
This perfectly matches the pattern _ _ M _ S _ R.

Answer: $\boxed{\text{SEMESTR}}$

5. Word Puzzle
Clues:

• The first three letters refers to a large ocean
• The last four letters refers to a curve
• It is the main motto and slogan of the company Google Pattern: SE__C_

• "The first three letters refers to a large ocean": If the word is SEARCH, the first three letters are SEA, which refers to a large body of water (ocean).
• "The last four letters refers to a curve": If the word is SEARCH, the last four letters are ARCH, which is a type of curve.
• "It is the main motto and slogan of the company Google": Google's primary function is SEARCH. While "Don't be evil" was a motto, the core activity of Google is searching.

`S E A R C H`  
The first two letters are SE.  
The fifth letter is C.  
This perfectly matches the pattern `SE _ _ C _`.

Answer: $\boxed{\text{SEARCH}}$