Questions 7-10. Direction: Encircle the letter of the correct Answer 1. The problem with the ballpoint pens invented between 1888 and 1935 was that

A. they costa great deal of money to manufacture.

B. the technology to manufacture them did not exist.

C. they could not write on ordinary paper.

D. they were affected by weather conditions.

2. The design of the Biro brothers‟ first pen.

A. was similar to previous pens.

B. was based on capillary action.

C. worked with heavy or light inks.

D. worked when slanted slightly.

3. Milton Reynolds was able to copy the Biro brother‟s design because

A. the Biro brothers‟ original patent was out of date.

B. it was legal to copy other designs at the time.

C. they did not have a patent for North America.

D. the Biro brothers gave him permission.

4. The first biro factory began production in

A. 1888

B. 1935

C. 1938

D. 1945​