What is the test for a motion to suppress or quash expert testimony?

'This ruling, however, should not be made when a portion only of the testimony of the witnesses is improper. In such case a motion should be directed to that portion of the testimony which is objectionable. As has been pointed out, much of the testimony of these expert witnesses was proper. It was proper to give testimony concerning comparable sales. It was also proper to show the cost of completing the subdivision and the value of lots therein for the purpose of throwing such light as it could upon the price which a purchaser would pay. The objections made did not point out the portion of testimony sought to be stricken, but were general in nature and aimed at the entire testimony. The court properly overruled them.' See, also, Rose v. State, supra, 19 Cal.2d 713, 742, 123 P.2d 505.

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